Home / 15,424.40-21,285.54-8,350.76

Finding the Fourth Proportional to 15,424.40, 21,285.54 and 8,350.76

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Solution

The fourth proportional to 15,424.40, 21,285.54 and 8,350.76 is: 11,523.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,424.40 : 21,285.54 = 8,350.76 : x
  2. Step 2: Convert to fraction form
    15,424.40/21,285.54 = 8,350.76/x
  3. Step 3: Cross multiply
    15,424.40x = 21,285.54 × 8,350.76
  4. Step 4: Simplify right side
    15,424.40x = 177,750,436.01
  5. Step 5: Solve for x
    x = 177,750,436.01/15,424.40
  6. Step 6: Final answer
    x = 11,523.98

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Half scale
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Double scale
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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.