Home / 31,148.75-42,985.22-17,001.56

Finding the Fourth Proportional to 31,148.75, 42,985.22 and 17,001.56

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Solution

The fourth proportional to 31,148.75, 42,985.22 and 17,001.56 is: 23,462.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,148.75 : 42,985.22 = 17,001.56 : x
  2. Step 2: Convert to fraction form
    31,148.75/42,985.22 = 17,001.56/x
  3. Step 3: Cross multiply
    31,148.75x = 42,985.22 × 17,001.56
  4. Step 4: Simplify right side
    31,148.75x = 730,815,819.40
  5. Step 5: Solve for x
    x = 730,815,819.40/31,148.75
  6. Step 6: Final answer
    x = 23,462.12

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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.