Home / 31,143.75-42,979.56-17,716.23

Finding the Fourth Proportional to 31,143.75, 42,979.56 and 17,716.23

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Solution

The fourth proportional to 31,143.75, 42,979.56 and 17,716.23 is: 24,449.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,143.75 : 42,979.56 = 17,716.23 : x
  2. Step 2: Convert to fraction form
    31,143.75/42,979.56 = 17,716.23/x
  3. Step 3: Cross multiply
    31,143.75x = 42,979.56 × 17,716.23
  4. Step 4: Simplify right side
    31,143.75x = 761,435,770.26
  5. Step 5: Solve for x
    x = 761,435,770.26/31,143.75
  6. Step 6: Final answer
    x = 24,449.07

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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.