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Finding the Fourth Proportional to 14,438.13, 21,660.06 and 7,042.73

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Solution

The fourth proportional to 14,438.13, 21,660.06 and 7,042.73 is: 10,565.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,438.13 : 21,660.06 = 7,042.73 : x
  2. Step 2: Convert to fraction form
    14,438.13/21,660.06 = 7,042.73/x
  3. Step 3: Cross multiply
    14,438.13x = 21,660.06 × 7,042.73
  4. Step 4: Simplify right side
    14,438.13x = 152,545,872.47
  5. Step 5: Solve for x
    x = 152,545,872.47/14,438.13
  6. Step 6: Final answer
    x = 10,565.49

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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.