Home / 18,288.48-27,432.72-5,140.92

Finding the Fourth Proportional to 18,288.48, 27,432.72 and 5,140.92

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Solution

The fourth proportional to 18,288.48, 27,432.72 and 5,140.92 is: 7,711.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,288.48 : 27,432.72 = 5,140.92 : x
  2. Step 2: Convert to fraction form
    18,288.48/27,432.72 = 5,140.92/x
  3. Step 3: Cross multiply
    18,288.48x = 27,432.72 × 5,140.92
  4. Step 4: Simplify right side
    18,288.48x = 141,029,418.90
  5. Step 5: Solve for x
    x = 141,029,418.90/18,288.48
  6. Step 6: Final answer
    x = 7,711.38

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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.