Home / 23,142.48-31,936.34-12,531.90

Finding the Fourth Proportional to 23,142.48, 31,936.34 and 12,531.90

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Solution

The fourth proportional to 23,142.48, 31,936.34 and 12,531.90 is: 17,293.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,142.48 : 31,936.34 = 12,531.90 : x
  2. Step 2: Convert to fraction form
    23,142.48/31,936.34 = 12,531.90/x
  3. Step 3: Cross multiply
    23,142.48x = 31,936.34 × 12,531.90
  4. Step 4: Simplify right side
    23,142.48x = 400,223,019.25
  5. Step 5: Solve for x
    x = 400,223,019.25/23,142.48
  6. Step 6: Final answer
    x = 17,293.87

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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.