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Finding the Fourth Proportional to 14,458.80, 21,677.40 and 7,892.40

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Solution

The fourth proportional to 14,458.80, 21,677.40 and 7,892.40 is: 11,832.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,458.80 : 21,677.40 = 7,892.40 : x
  2. Step 2: Convert to fraction form
    14,458.80/21,677.40 = 7,892.40/x
  3. Step 3: Cross multiply
    14,458.80x = 21,677.40 × 7,892.40
  4. Step 4: Simplify right side
    14,458.80x = 171,086,711.76
  5. Step 5: Solve for x
    x = 171,086,711.76/14,458.80
  6. Step 6: Final answer
    x = 11,832.70

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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.