Home / 21,167.39-31,751.54-7,127.84

Finding the Fourth Proportional to 21,167.39, 31,751.54 and 7,127.84

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Solution

The fourth proportional to 21,167.39, 31,751.54 and 7,127.84 is: 10,691.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,167.39 : 31,751.54 = 7,127.84 : x
  2. Step 2: Convert to fraction form
    21,167.39/31,751.54 = 7,127.84/x
  3. Step 3: Cross multiply
    21,167.39x = 31,751.54 × 7,127.84
  4. Step 4: Simplify right side
    21,167.39x = 226,319,702.48
  5. Step 5: Solve for x
    x = 226,319,702.48/21,167.39
  6. Step 6: Final answer
    x = 10,691.91

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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.