Home / 29,097.90-40,138.21-18,338.55

Finding the Fourth Proportional to 29,097.90, 40,138.21 and 18,338.55

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Solution

The fourth proportional to 29,097.90, 40,138.21 and 18,338.55 is: 25,296.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,097.90 : 40,138.21 = 18,338.55 : x
  2. Step 2: Convert to fraction form
    29,097.90/40,138.21 = 18,338.55/x
  3. Step 3: Cross multiply
    29,097.90x = 40,138.21 × 18,338.55
  4. Step 4: Simplify right side
    29,097.90x = 736,076,625.49
  5. Step 5: Solve for x
    x = 736,076,625.49/29,097.90
  6. Step 6: Final answer
    x = 25,296.56

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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.