Home / 15,129.20-22,688.40-5,268.80

Finding the Fourth Proportional to 15,129.20, 22,688.40 and 5,268.80

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Solution

The fourth proportional to 15,129.20, 22,688.40 and 5,268.80 is: 7,901.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,129.20 : 22,688.40 = 5,268.80 : x
  2. Step 2: Convert to fraction form
    15,129.20/22,688.40 = 5,268.80/x
  3. Step 3: Cross multiply
    15,129.20x = 22,688.40 × 5,268.80
  4. Step 4: Simplify right side
    15,129.20x = 119,540,641.92
  5. Step 5: Solve for x
    x = 119,540,641.92/15,129.20
  6. Step 6: Final answer
    x = 7,901.32

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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.