Home / 29,279.79-40,405.83-15,850.70

Finding the Fourth Proportional to 29,279.79, 40,405.83 and 15,850.70

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Solution

The fourth proportional to 29,279.79, 40,405.83 and 15,850.70 is: 21,873.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,279.79 : 40,405.83 = 15,850.70 : x
  2. Step 2: Convert to fraction form
    29,279.79/40,405.83 = 15,850.70/x
  3. Step 3: Cross multiply
    29,279.79x = 40,405.83 × 15,850.70
  4. Step 4: Simplify right side
    29,279.79x = 640,460,487.55
  5. Step 5: Solve for x
    x = 640,460,487.55/29,279.79
  6. Step 6: Final answer
    x = 21,873.81

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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.