Home / 31,149.71-42,985.10-17,719.70

Finding the Fourth Proportional to 31,149.71, 42,985.10 and 17,719.70

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Solution

The fourth proportional to 31,149.71, 42,985.10 and 17,719.70 is: 24,452.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,149.71 : 42,985.10 = 17,719.70 : x
  2. Step 2: Convert to fraction form
    31,149.71/42,985.10 = 17,719.70/x
  3. Step 3: Cross multiply
    31,149.71x = 42,985.10 × 17,719.70
  4. Step 4: Simplify right side
    31,149.71x = 761,682,987.87
  5. Step 5: Solve for x
    x = 761,682,987.87/31,149.71
  6. Step 6: Final answer
    x = 24,452.33

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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.