Home / 19,938.72-27,472.86-18,116.22

Finding the Fourth Proportional to 19,938.72, 27,472.86 and 18,116.22

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Solution

The fourth proportional to 19,938.72, 27,472.86 and 18,116.22 is: 24,961.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,938.72 : 27,472.86 = 18,116.22 : x
  2. Step 2: Convert to fraction form
    19,938.72/27,472.86 = 18,116.22/x
  3. Step 3: Cross multiply
    19,938.72x = 27,472.86 × 18,116.22
  4. Step 4: Simplify right side
    19,938.72x = 497,704,375.79
  5. Step 5: Solve for x
    x = 497,704,375.79/19,938.72
  6. Step 6: Final answer
    x = 24,961.70

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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.