Home / 31,445.12-43,394.26-18,869.88

Finding the Fourth Proportional to 31,445.12, 43,394.26 and 18,869.88

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Solution

The fourth proportional to 31,445.12, 43,394.26 and 18,869.88 is: 26,040.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,445.12 : 43,394.26 = 18,869.88 : x
  2. Step 2: Convert to fraction form
    31,445.12/43,394.26 = 18,869.88/x
  3. Step 3: Cross multiply
    31,445.12x = 43,394.26 × 18,869.88
  4. Step 4: Simplify right side
    31,445.12x = 818,844,478.89
  5. Step 5: Solve for x
    x = 818,844,478.89/31,445.12
  6. Step 6: Final answer
    x = 26,040.43

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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.