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Finding the Fourth Proportional to 14,791.91, 20,401.30 and 9,487.13

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Solution

The fourth proportional to 14,791.91, 20,401.30 and 9,487.13 is: 13,084.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,791.91 : 20,401.30 = 9,487.13 : x
  2. Step 2: Convert to fraction form
    14,791.91/20,401.30 = 9,487.13/x
  3. Step 3: Cross multiply
    14,791.91x = 20,401.30 × 9,487.13
  4. Step 4: Simplify right side
    14,791.91x = 193,549,812.55
  5. Step 5: Solve for x
    x = 193,549,812.55/14,791.91
  6. Step 6: Final answer
    x = 13,084.84

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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.