Home / 26,405.28-36,439.20-15,791.04

Finding the Fourth Proportional to 26,405.28, 36,439.20 and 15,791.04

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Solution

The fourth proportional to 26,405.28, 36,439.20 and 15,791.04 is: 21,791.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,405.28 : 36,439.20 = 15,791.04 : x
  2. Step 2: Convert to fraction form
    26,405.28/36,439.20 = 15,791.04/x
  3. Step 3: Cross multiply
    26,405.28x = 36,439.20 × 15,791.04
  4. Step 4: Simplify right side
    26,405.28x = 575,412,864.77
  5. Step 5: Solve for x
    x = 575,412,864.77/26,405.28
  6. Step 6: Final answer
    x = 21,791.58

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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.