Home / 29,279.18-40,405.41-15,850.45

Finding the Fourth Proportional to 29,279.18, 40,405.41 and 15,850.45

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Solution

The fourth proportional to 29,279.18, 40,405.41 and 15,850.45 is: 21,873.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,279.18 : 40,405.41 = 15,850.45 : x
  2. Step 2: Convert to fraction form
    29,279.18/40,405.41 = 15,850.45/x
  3. Step 3: Cross multiply
    29,279.18x = 40,405.41 × 15,850.45
  4. Step 4: Simplify right side
    29,279.18x = 640,443,930.93
  5. Step 5: Solve for x
    x = 640,443,930.93/29,279.18
  6. Step 6: Final answer
    x = 21,873.70

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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.