Home / 19,789.80-29,705.16-13,261.61

Finding the Fourth Proportional to 19,789.80, 29,705.16 and 13,261.61

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Solution

The fourth proportional to 19,789.80, 29,705.16 and 13,261.61 is: 19,906.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,789.80 : 29,705.16 = 13,261.61 : x
  2. Step 2: Convert to fraction form
    19,789.80/29,705.16 = 13,261.61/x
  3. Step 3: Cross multiply
    19,789.80x = 29,705.16 × 13,261.61
  4. Step 4: Simplify right side
    19,789.80x = 393,938,098.38
  5. Step 5: Solve for x
    x = 393,938,098.38/19,789.80
  6. Step 6: Final answer
    x = 19,906.12

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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.