Home / 31,988.33-47,988.17-15,378.47

Finding the Fourth Proportional to 31,988.33, 47,988.17 and 15,378.47

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Solution

The fourth proportional to 31,988.33, 47,988.17 and 15,378.47 is: 23,070.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,988.33 : 47,988.17 = 15,378.47 : x
  2. Step 2: Convert to fraction form
    31,988.33/47,988.17 = 15,378.47/x
  3. Step 3: Cross multiply
    31,988.33x = 47,988.17 × 15,378.47
  4. Step 4: Simplify right side
    31,988.33x = 737,984,632.70
  5. Step 5: Solve for x
    x = 737,984,632.70/31,988.33
  6. Step 6: Final answer
    x = 23,070.43

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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.