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Finding the Fourth Proportional to 29,010.60, 40,043.70 and 18,399.60

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Solution

The fourth proportional to 29,010.60, 40,043.70 and 18,399.60 is: 25,397.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,010.60 : 40,043.70 = 18,399.60 : x
  2. Step 2: Convert to fraction form
    29,010.60/40,043.70 = 18,399.60/x
  3. Step 3: Cross multiply
    29,010.60x = 40,043.70 × 18,399.60
  4. Step 4: Simplify right side
    29,010.60x = 736,788,062.52
  5. Step 5: Solve for x
    x = 736,788,062.52/29,010.60
  6. Step 6: Final answer
    x = 25,397.20

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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.