Home / 18,474.26-25,490.13-13,705.21

Finding the Fourth Proportional to 18,474.26, 25,490.13 and 13,705.21

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Solution

The fourth proportional to 18,474.26, 25,490.13 and 13,705.21 is: 18,909.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,474.26 : 25,490.13 = 13,705.21 : x
  2. Step 2: Convert to fraction form
    18,474.26/25,490.13 = 13,705.21/x
  3. Step 3: Cross multiply
    18,474.26x = 25,490.13 × 13,705.21
  4. Step 4: Simplify right side
    18,474.26x = 349,347,565.05
  5. Step 5: Solve for x
    x = 349,347,565.05/18,474.26
  6. Step 6: Final answer
    x = 18,909.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.