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Finding the Fourth Proportional to 14,691.61, 20,274.34 and 7,977.19

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Solution

The fourth proportional to 14,691.61, 20,274.34 and 7,977.19 is: 11,008.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,691.61 : 20,274.34 = 7,977.19 : x
  2. Step 2: Convert to fraction form
    14,691.61/20,274.34 = 7,977.19/x
  3. Step 3: Cross multiply
    14,691.61x = 20,274.34 × 7,977.19
  4. Step 4: Simplify right side
    14,691.61x = 161,732,262.30
  5. Step 5: Solve for x
    x = 161,732,262.30/14,691.61
  6. Step 6: Final answer
    x = 11,008.48

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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.