Home / 31,686.31-43,736.84-18,266.53

Finding the Fourth Proportional to 31,686.31, 43,736.84 and 18,266.53

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Solution

The fourth proportional to 31,686.31, 43,736.84 and 18,266.53 is: 25,213.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,686.31 : 43,736.84 = 18,266.53 : x
  2. Step 2: Convert to fraction form
    31,686.31/43,736.84 = 18,266.53/x
  3. Step 3: Cross multiply
    31,686.31x = 43,736.84 × 18,266.53
  4. Step 4: Simplify right side
    31,686.31x = 798,920,299.97
  5. Step 5: Solve for x
    x = 798,920,299.97/31,686.31
  6. Step 6: Final answer
    x = 25,213.42

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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.