Home / 18,717.12-28,081.17-7,031.25

Finding the Fourth Proportional to 18,717.12, 28,081.17 and 7,031.25

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Solution

The fourth proportional to 18,717.12, 28,081.17 and 7,031.25 is: 10,548.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,717.12 : 28,081.17 = 7,031.25 : x
  2. Step 2: Convert to fraction form
    18,717.12/28,081.17 = 7,031.25/x
  3. Step 3: Cross multiply
    18,717.12x = 28,081.17 × 7,031.25
  4. Step 4: Simplify right side
    18,717.12x = 197,445,726.56
  5. Step 5: Solve for x
    x = 197,445,726.56/18,717.12
  6. Step 6: Final answer
    x = 10,548.94

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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.