Home / 31,480.11-43,432.81-17,865.97

Finding the Fourth Proportional to 31,480.11, 43,432.81 and 17,865.97

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Solution

The fourth proportional to 31,480.11, 43,432.81 and 17,865.97 is: 24,649.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,480.11 : 43,432.81 = 17,865.97 : x
  2. Step 2: Convert to fraction form
    31,480.11/43,432.81 = 17,865.97/x
  3. Step 3: Cross multiply
    31,480.11x = 43,432.81 × 17,865.97
  4. Step 4: Simplify right side
    31,480.11x = 775,969,127.23
  5. Step 5: Solve for x
    x = 775,969,127.23/31,480.11
  6. Step 6: Final answer
    x = 24,649.50

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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.