Home / 15,469.80-21,347.46-9,182.76

Finding the Fourth Proportional to 15,469.80, 21,347.46 and 9,182.76

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Solution

The fourth proportional to 15,469.80, 21,347.46 and 9,182.76 is: 12,671.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,469.80 : 21,347.46 = 9,182.76 : x
  2. Step 2: Convert to fraction form
    15,469.80/21,347.46 = 9,182.76/x
  3. Step 3: Cross multiply
    15,469.80x = 21,347.46 × 9,182.76
  4. Step 4: Simplify right side
    15,469.80x = 196,028,601.79
  5. Step 5: Solve for x
    x = 196,028,601.79/15,469.80
  6. Step 6: Final answer
    x = 12,671.70

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Find fourth proportional to 7,734.90, 10,673.73 and 4,591.38
Half scale
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Double scale
Find fourth proportional to 15,470.80, 21,348.84 and 9,183.76
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.