Home / 31,564.98-43,560.60-18,138.84

Finding the Fourth Proportional to 31,564.98, 43,560.60 and 18,138.84

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Solution

The fourth proportional to 31,564.98, 43,560.60 and 18,138.84 is: 25,032.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,564.98 : 43,560.60 = 18,138.84 : x
  2. Step 2: Convert to fraction form
    31,564.98/43,560.60 = 18,138.84/x
  3. Step 3: Cross multiply
    31,564.98x = 43,560.60 × 18,138.84
  4. Step 4: Simplify right side
    31,564.98x = 790,138,753.70
  5. Step 5: Solve for x
    x = 790,138,753.70/31,564.98
  6. Step 6: Final answer
    x = 25,032.13

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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.