Home / 30,989.39-42,687.20-25,004.30

Finding the Fourth Proportional to 30,989.39, 42,687.20 and 25,004.30

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Solution

The fourth proportional to 30,989.39, 42,687.20 and 25,004.30 is: 34,442.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,989.39 : 42,687.20 = 25,004.30 : x
  2. Step 2: Convert to fraction form
    30,989.39/42,687.20 = 25,004.30/x
  3. Step 3: Cross multiply
    30,989.39x = 42,687.20 × 25,004.30
  4. Step 4: Simplify right side
    30,989.39x = 1,067,363,404.03
  5. Step 5: Solve for x
    x = 1,067,363,404.03/30,989.39
  6. Step 6: Final answer
    x = 34,442.87

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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.