Home / 18,717.62-28,081.90-7,031.76

Finding the Fourth Proportional to 18,717.62, 28,081.90 and 7,031.76

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Solution

The fourth proportional to 18,717.62, 28,081.90 and 7,031.76 is: 10,549.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,717.62 : 28,081.90 = 7,031.76 : x
  2. Step 2: Convert to fraction form
    18,717.62/28,081.90 = 7,031.76/x
  3. Step 3: Cross multiply
    18,717.62x = 28,081.90 × 7,031.76
  4. Step 4: Simplify right side
    18,717.62x = 197,465,181.14
  5. Step 5: Solve for x
    x = 197,465,181.14/18,717.62
  6. Step 6: Final answer
    x = 10,549.69

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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.