Home / 31,448.12-43,398.40-18,872.88

Finding the Fourth Proportional to 31,448.12, 43,398.40 and 18,872.88

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Solution

The fourth proportional to 31,448.12, 43,398.40 and 18,872.88 is: 26,044.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,448.12 : 43,398.40 = 18,872.88 : x
  2. Step 2: Convert to fraction form
    31,448.12/43,398.40 = 18,872.88/x
  3. Step 3: Cross multiply
    31,448.12x = 43,398.40 × 18,872.88
  4. Step 4: Simplify right side
    31,448.12x = 819,052,795.39
  5. Step 5: Solve for x
    x = 819,052,795.39/31,448.12
  6. Step 6: Final answer
    x = 26,044.57

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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.