Home / 13,062.39-18,031.62-8,819.20

Finding the Fourth Proportional to 13,062.39, 18,031.62 and 8,819.20

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Solution

The fourth proportional to 13,062.39, 18,031.62 and 8,819.20 is: 12,174.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,062.39 : 18,031.62 = 8,819.20 : x
  2. Step 2: Convert to fraction form
    13,062.39/18,031.62 = 8,819.20/x
  3. Step 3: Cross multiply
    13,062.39x = 18,031.62 × 8,819.20
  4. Step 4: Simplify right side
    13,062.39x = 159,024,463.10
  5. Step 5: Solve for x
    x = 159,024,463.10/13,062.39
  6. Step 6: Final answer
    x = 12,174.22

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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.