Home / 12,731.04-17,568-7,140.96

Finding the Fourth Proportional to 12,731.04, 17,568 and 7,140.96

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Solution

The fourth proportional to 12,731.04, 17,568 and 7,140.96 is: 9,854.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,731.04 : 17,568 = 7,140.96 : x
  2. Step 2: Convert to fraction form
    12,731.04/17,568 = 7,140.96/x
  3. Step 3: Cross multiply
    12,731.04x = 17,568 × 7,140.96
  4. Step 4: Simplify right side
    12,731.04x = 125,452,385.28
  5. Step 5: Solve for x
    x = 125,452,385.28/12,731.04
  6. Step 6: Final answer
    x = 9,854.06

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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.