Home / 20,863.52-28,792.24-11,432.72

Finding the Fourth Proportional to 20,863.52, 28,792.24 and 11,432.72

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Solution

The fourth proportional to 20,863.52, 28,792.24 and 11,432.72 is: 15,777.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,863.52 : 28,792.24 = 11,432.72 : x
  2. Step 2: Convert to fraction form
    20,863.52/28,792.24 = 11,432.72/x
  3. Step 3: Cross multiply
    20,863.52x = 28,792.24 × 11,432.72
  4. Step 4: Simplify right side
    20,863.52x = 329,173,618.09
  5. Step 5: Solve for x
    x = 329,173,618.09/20,863.52
  6. Step 6: Final answer
    x = 15,777.47

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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.