Home / 12,731.34-17,572.59-7,144.14

Finding the Fourth Proportional to 12,731.34, 17,572.59 and 7,144.14

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Solution

The fourth proportional to 12,731.34, 17,572.59 and 7,144.14 is: 9,860.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,731.34 : 17,572.59 = 7,144.14 : x
  2. Step 2: Convert to fraction form
    12,731.34/17,572.59 = 7,144.14/x
  3. Step 3: Cross multiply
    12,731.34x = 17,572.59 × 7,144.14
  4. Step 4: Simplify right side
    12,731.34x = 125,541,043.12
  5. Step 5: Solve for x
    x = 125,541,043.12/12,731.34
  6. Step 6: Final answer
    x = 9,860.79

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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.