Home / 18,430.54-25,434.15-10,472.78

Finding the Fourth Proportional to 18,430.54, 25,434.15 and 10,472.78

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Solution

The fourth proportional to 18,430.54, 25,434.15 and 10,472.78 is: 14,452.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,430.54 : 25,434.15 = 10,472.78 : x
  2. Step 2: Convert to fraction form
    18,430.54/25,434.15 = 10,472.78/x
  3. Step 3: Cross multiply
    18,430.54x = 25,434.15 × 10,472.78
  4. Step 4: Simplify right side
    18,430.54x = 266,366,077.90
  5. Step 5: Solve for x
    x = 266,366,077.90/18,430.54
  6. Step 6: Final answer
    x = 14,452.43

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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.