Home / 20,864.16-28,792.40-11,432.52

Finding the Fourth Proportional to 20,864.16, 28,792.40 and 11,432.52

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Solution

The fourth proportional to 20,864.16, 28,792.40 and 11,432.52 is: 15,776.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,864.16 : 28,792.40 = 11,432.52 : x
  2. Step 2: Convert to fraction form
    20,864.16/28,792.40 = 11,432.52/x
  3. Step 3: Cross multiply
    20,864.16x = 28,792.40 × 11,432.52
  4. Step 4: Simplify right side
    20,864.16x = 329,169,631.69
  5. Step 5: Solve for x
    x = 329,169,631.69/20,864.16
  6. Step 6: Final answer
    x = 15,776.80

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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.