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Finding the Fourth Proportional to 19,449.70, 29,201.55 and 12,472.90

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Solution

The fourth proportional to 19,449.70, 29,201.55 and 12,472.90 is: 18,726.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,449.70 : 29,201.55 = 12,472.90 : x
  2. Step 2: Convert to fraction form
    19,449.70/29,201.55 = 12,472.90/x
  3. Step 3: Cross multiply
    19,449.70x = 29,201.55 × 12,472.90
  4. Step 4: Simplify right side
    19,449.70x = 364,228,013.00
  5. Step 5: Solve for x
    x = 364,228,013.00/19,449.70
  6. Step 6: Final answer
    x = 18,726.66

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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.