Home / 36,008.08-53,979.28-12,621.76

Finding the Fourth Proportional to 36,008.08, 53,979.28 and 12,621.76

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Solution

The fourth proportional to 36,008.08, 53,979.28 and 12,621.76 is: 18,921.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,008.08 : 53,979.28 = 12,621.76 : x
  2. Step 2: Convert to fraction form
    36,008.08/53,979.28 = 12,621.76/x
  3. Step 3: Cross multiply
    36,008.08x = 53,979.28 × 12,621.76
  4. Step 4: Simplify right side
    36,008.08x = 681,313,517.13
  5. Step 5: Solve for x
    x = 681,313,517.13/36,008.08
  6. Step 6: Final answer
    x = 18,921.13

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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.