Home / 31,422.96-47,122.14-11,690.75

Finding the Fourth Proportional to 31,422.96, 47,122.14 and 11,690.75

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Solution

The fourth proportional to 31,422.96, 47,122.14 and 11,690.75 is: 17,531.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,422.96 : 47,122.14 = 11,690.75 : x
  2. Step 2: Convert to fraction form
    31,422.96/47,122.14 = 11,690.75/x
  3. Step 3: Cross multiply
    31,422.96x = 47,122.14 × 11,690.75
  4. Step 4: Simplify right side
    31,422.96x = 550,893,158.21
  5. Step 5: Solve for x
    x = 550,893,158.21/31,422.96
  6. Step 6: Final answer
    x = 17,531.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.