Home / 31,150.92-42,988.35-17,003.78

Finding the Fourth Proportional to 31,150.92, 42,988.35 and 17,003.78

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Solution

The fourth proportional to 31,150.92, 42,988.35 and 17,003.78 is: 23,465.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,150.92 : 42,988.35 = 17,003.78 : x
  2. Step 2: Convert to fraction form
    31,150.92/42,988.35 = 17,003.78/x
  3. Step 3: Cross multiply
    31,150.92x = 42,988.35 × 17,003.78
  4. Step 4: Simplify right side
    31,150.92x = 730,964,231.02
  5. Step 5: Solve for x
    x = 730,964,231.02/31,150.92
  6. Step 6: Final answer
    x = 23,465.25

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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.