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Finding the Fourth Proportional to 28,392.71, 42,593.18 and 8,668.71

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Solution

The fourth proportional to 28,392.71, 42,593.18 and 8,668.71 is: 13,004.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,392.71 : 42,593.18 = 8,668.71 : x
  2. Step 2: Convert to fraction form
    28,392.71/42,593.18 = 8,668.71/x
  3. Step 3: Cross multiply
    28,392.71x = 42,593.18 × 8,668.71
  4. Step 4: Simplify right side
    28,392.71x = 369,227,882.05
  5. Step 5: Solve for x
    x = 369,227,882.05/28,392.71
  6. Step 6: Final answer
    x = 13,004.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.