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Finding the Fourth Proportional to 14,691.48, 20,274.27 and 7,977.12

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Solution

The fourth proportional to 14,691.48, 20,274.27 and 7,977.12 is: 11,008.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,691.48 : 20,274.27 = 7,977.12 : x
  2. Step 2: Convert to fraction form
    14,691.48/20,274.27 = 7,977.12/x
  3. Step 3: Cross multiply
    14,691.48x = 20,274.27 × 7,977.12
  4. Step 4: Simplify right side
    14,691.48x = 161,730,284.70
  5. Step 5: Solve for x
    x = 161,730,284.70/14,691.48
  6. Step 6: Final answer
    x = 11,008.44

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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.