Home / 22,742.05-31,386.34-12,672.13

Finding the Fourth Proportional to 22,742.05, 31,386.34 and 12,672.13

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Solution

The fourth proportional to 22,742.05, 31,386.34 and 12,672.13 is: 17,488.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,742.05 : 31,386.34 = 12,672.13 : x
  2. Step 2: Convert to fraction form
    22,742.05/31,386.34 = 12,672.13/x
  3. Step 3: Cross multiply
    22,742.05x = 31,386.34 × 12,672.13
  4. Step 4: Simplify right side
    22,742.05x = 397,731,780.70
  5. Step 5: Solve for x
    x = 397,731,780.70/22,742.05
  6. Step 6: Final answer
    x = 17,488.83

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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.