Home / 29,098.15-40,138.55-18,338.80

Finding the Fourth Proportional to 29,098.15, 40,138.55 and 18,338.80

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Solution

The fourth proportional to 29,098.15, 40,138.55 and 18,338.80 is: 25,296.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,098.15 : 40,138.55 = 18,338.80 : x
  2. Step 2: Convert to fraction form
    29,098.15/40,138.55 = 18,338.80/x
  3. Step 3: Cross multiply
    29,098.15x = 40,138.55 × 18,338.80
  4. Step 4: Simplify right side
    29,098.15x = 736,092,986.93
  5. Step 5: Solve for x
    x = 736,092,986.93/29,098.15
  6. Step 6: Final answer
    x = 25,296.90

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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.