Home / 22,487.23-31,003.50-18,439.21

Finding the Fourth Proportional to 22,487.23, 31,003.50 and 18,439.21

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Solution

The fourth proportional to 22,487.23, 31,003.50 and 18,439.21 is: 25,422.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,487.23 : 31,003.50 = 18,439.21 : x
  2. Step 2: Convert to fraction form
    22,487.23/31,003.50 = 18,439.21/x
  3. Step 3: Cross multiply
    22,487.23x = 31,003.50 × 18,439.21
  4. Step 4: Simplify right side
    22,487.23x = 571,680,047.24
  5. Step 5: Solve for x
    x = 571,680,047.24/22,487.23
  6. Step 6: Final answer
    x = 25,422.43

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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.