Home / 31,029.72-42,821.45-16,882.57

Finding the Fourth Proportional to 31,029.72, 42,821.45 and 16,882.57

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Solution

The fourth proportional to 31,029.72, 42,821.45 and 16,882.57 is: 23,298.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,029.72 : 42,821.45 = 16,882.57 : x
  2. Step 2: Convert to fraction form
    31,029.72/42,821.45 = 16,882.57/x
  3. Step 3: Cross multiply
    31,029.72x = 42,821.45 × 16,882.57
  4. Step 4: Simplify right side
    31,029.72x = 722,936,127.13
  5. Step 5: Solve for x
    x = 722,936,127.13/31,029.72
  6. Step 6: Final answer
    x = 23,298.18

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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.