Home / 26,391.12-36,424.44-15,781.92

Finding the Fourth Proportional to 26,391.12, 36,424.44 and 15,781.92

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Solution

The fourth proportional to 26,391.12, 36,424.44 and 15,781.92 is: 21,781.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,391.12 : 36,424.44 = 15,781.92 : x
  2. Step 2: Convert to fraction form
    26,391.12/36,424.44 = 15,781.92/x
  3. Step 3: Cross multiply
    26,391.12x = 36,424.44 × 15,781.92
  4. Step 4: Simplify right side
    26,391.12x = 574,847,598.12
  5. Step 5: Solve for x
    x = 574,847,598.12/26,391.12
  6. Step 6: Final answer
    x = 21,781.86

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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.