Home / 45,285.38-67,931.19-18,963.62

Finding the Fourth Proportional to 45,285.38, 67,931.19 and 18,963.62

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Solution

The fourth proportional to 45,285.38, 67,931.19 and 18,963.62 is: 28,446.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,285.38 : 67,931.19 = 18,963.62 : x
  2. Step 2: Convert to fraction form
    45,285.38/67,931.19 = 18,963.62/x
  3. Step 3: Cross multiply
    45,285.38x = 67,931.19 × 18,963.62
  4. Step 4: Simplify right side
    45,285.38x = 1,288,221,273.31
  5. Step 5: Solve for x
    x = 1,288,221,273.31/45,285.38
  6. Step 6: Final answer
    x = 28,446.74

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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.