Home / 31,422.60-43,363.08-18,684.72

Finding the Fourth Proportional to 31,422.60, 43,363.08 and 18,684.72

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Solution

The fourth proportional to 31,422.60, 43,363.08 and 18,684.72 is: 25,784.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,422.60 : 43,363.08 = 18,684.72 : x
  2. Step 2: Convert to fraction form
    31,422.60/43,363.08 = 18,684.72/x
  3. Step 3: Cross multiply
    31,422.60x = 43,363.08 × 18,684.72
  4. Step 4: Simplify right side
    31,422.60x = 810,227,008.14
  5. Step 5: Solve for x
    x = 810,227,008.14/31,422.60
  6. Step 6: Final answer
    x = 25,784.85

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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.