Home / 19,490.42-29,233.20-11,489.78

Finding the Fourth Proportional to 19,490.42, 29,233.20 and 11,489.78

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Solution

The fourth proportional to 19,490.42, 29,233.20 and 11,489.78 is: 17,233.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,490.42 : 29,233.20 = 11,489.78 : x
  2. Step 2: Convert to fraction form
    19,490.42/29,233.20 = 11,489.78/x
  3. Step 3: Cross multiply
    19,490.42x = 29,233.20 × 11,489.78
  4. Step 4: Simplify right side
    19,490.42x = 335,883,036.70
  5. Step 5: Solve for x
    x = 335,883,036.70/19,490.42
  6. Step 6: Final answer
    x = 17,233.24

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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.