Home / 31,809.22-47,711.40-12,092.20

Finding the Fourth Proportional to 31,809.22, 47,711.40 and 12,092.20

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Solution

The fourth proportional to 31,809.22, 47,711.40 and 12,092.20 is: 18,137.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,809.22 : 47,711.40 = 12,092.20 : x
  2. Step 2: Convert to fraction form
    31,809.22/47,711.40 = 12,092.20/x
  3. Step 3: Cross multiply
    31,809.22x = 47,711.40 × 12,092.20
  4. Step 4: Simplify right side
    31,809.22x = 576,935,791.08
  5. Step 5: Solve for x
    x = 576,935,791.08/31,809.22
  6. Step 6: Final answer
    x = 18,137.38

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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.