Home / 13,726.64-18,942.72-7,439.04

Finding the Fourth Proportional to 13,726.64, 18,942.72 and 7,439.04

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Solution

The fourth proportional to 13,726.64, 18,942.72 and 7,439.04 is: 10,265.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,726.64 : 18,942.72 = 7,439.04 : x
  2. Step 2: Convert to fraction form
    13,726.64/18,942.72 = 7,439.04/x
  3. Step 3: Cross multiply
    13,726.64x = 18,942.72 × 7,439.04
  4. Step 4: Simplify right side
    13,726.64x = 140,915,651.79
  5. Step 5: Solve for x
    x = 140,915,651.79/13,726.64
  6. Step 6: Final answer
    x = 10,265.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.