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Finding the Fourth Proportional to 29,399.60, 40,549.08 and 20,340.05

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Solution

The fourth proportional to 29,399.60, 40,549.08 and 20,340.05 is: 28,053.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,399.60 : 40,549.08 = 20,340.05 : x
  2. Step 2: Convert to fraction form
    29,399.60/40,549.08 = 20,340.05/x
  3. Step 3: Cross multiply
    29,399.60x = 40,549.08 × 20,340.05
  4. Step 4: Simplify right side
    29,399.60x = 824,770,111.91
  5. Step 5: Solve for x
    x = 824,770,111.91/29,399.60
  6. Step 6: Final answer
    x = 28,053.79

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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.