Home / 20,962.16-31,437.96-12,531.08

Finding the Fourth Proportional to 20,962.16, 31,437.96 and 12,531.08

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Solution

The fourth proportional to 20,962.16, 31,437.96 and 12,531.08 is: 18,793.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,962.16 : 31,437.96 = 12,531.08 : x
  2. Step 2: Convert to fraction form
    20,962.16/31,437.96 = 12,531.08/x
  3. Step 3: Cross multiply
    20,962.16x = 31,437.96 × 12,531.08
  4. Step 4: Simplify right side
    20,962.16x = 393,951,434.61
  5. Step 5: Solve for x
    x = 393,951,434.61/20,962.16
  6. Step 6: Final answer
    x = 18,793.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.