Home / 13,251.72-18,287.88-7,587.36

Finding the Fourth Proportional to 13,251.72, 18,287.88 and 7,587.36

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Solution

The fourth proportional to 13,251.72, 18,287.88 and 7,587.36 is: 10,470.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,251.72 : 18,287.88 = 7,587.36 : x
  2. Step 2: Convert to fraction form
    13,251.72/18,287.88 = 7,587.36/x
  3. Step 3: Cross multiply
    13,251.72x = 18,287.88 × 7,587.36
  4. Step 4: Simplify right side
    13,251.72x = 138,756,729.20
  5. Step 5: Solve for x
    x = 138,756,729.20/13,251.72
  6. Step 6: Final answer
    x = 10,470.85

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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.