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Finding the Fourth Proportional to 28,169.17, 38,873.12 and 15,593.92

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Solution

The fourth proportional to 28,169.17, 38,873.12 and 15,593.92 is: 21,519.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,169.17 : 38,873.12 = 15,593.92 : x
  2. Step 2: Convert to fraction form
    28,169.17/38,873.12 = 15,593.92/x
  3. Step 3: Cross multiply
    28,169.17x = 38,873.12 × 15,593.92
  4. Step 4: Simplify right side
    28,169.17x = 606,184,148.28
  5. Step 5: Solve for x
    x = 606,184,148.28/28,169.17
  6. Step 6: Final answer
    x = 21,519.42

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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.