Home / 15,844.40-21,863.76-8,769.68

Finding the Fourth Proportional to 15,844.40, 21,863.76 and 8,769.68

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Solution

The fourth proportional to 15,844.40, 21,863.76 and 8,769.68 is: 12,101.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,844.40 : 21,863.76 = 8,769.68 : x
  2. Step 2: Convert to fraction form
    15,844.40/21,863.76 = 8,769.68/x
  3. Step 3: Cross multiply
    15,844.40x = 21,863.76 × 8,769.68
  4. Step 4: Simplify right side
    15,844.40x = 191,738,178.80
  5. Step 5: Solve for x
    x = 191,738,178.80/15,844.40
  6. Step 6: Final answer
    x = 12,101.32

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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.