Home / 13,807.92-20,712.57-3,948.65

Finding the Fourth Proportional to 13,807.92, 20,712.57 and 3,948.65

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Solution

The fourth proportional to 13,807.92, 20,712.57 and 3,948.65 is: 5,923.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,807.92 : 20,712.57 = 3,948.65 : x
  2. Step 2: Convert to fraction form
    13,807.92/20,712.57 = 3,948.65/x
  3. Step 3: Cross multiply
    13,807.92x = 20,712.57 × 3,948.65
  4. Step 4: Simplify right side
    13,807.92x = 81,786,689.53
  5. Step 5: Solve for x
    x = 81,786,689.53/13,807.92
  6. Step 6: Final answer
    x = 5,923.17

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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.