Home / 12,614.13-18,921.20-5,210.45

Finding the Fourth Proportional to 12,614.13, 18,921.20 and 5,210.45

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Solution

The fourth proportional to 12,614.13, 18,921.20 and 5,210.45 is: 7,815.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,614.13 : 18,921.20 = 5,210.45 : x
  2. Step 2: Convert to fraction form
    12,614.13/18,921.20 = 5,210.45/x
  3. Step 3: Cross multiply
    12,614.13x = 18,921.20 × 5,210.45
  4. Step 4: Simplify right side
    12,614.13x = 98,587,966.54
  5. Step 5: Solve for x
    x = 98,587,966.54/12,614.13
  6. Step 6: Final answer
    x = 7,815.68

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Similar ratio
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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.