Home / 31,425.28-43,368-17,279.20

Finding the Fourth Proportional to 31,425.28, 43,368 and 17,279.20

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Solution

The fourth proportional to 31,425.28, 43,368 and 17,279.20 is: 23,845.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,425.28 : 43,368 = 17,279.20 : x
  2. Step 2: Convert to fraction form
    31,425.28/43,368 = 17,279.20/x
  3. Step 3: Cross multiply
    31,425.28x = 43,368 × 17,279.20
  4. Step 4: Simplify right side
    31,425.28x = 749,364,345.60
  5. Step 5: Solve for x
    x = 749,364,345.60/31,425.28
  6. Step 6: Final answer
    x = 23,845.91

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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.