Home / 30,691.13-42,355.58-18,757.40

Finding the Fourth Proportional to 30,691.13, 42,355.58 and 18,757.40

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Solution

The fourth proportional to 30,691.13, 42,355.58 and 18,757.40 is: 25,886.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,691.13 : 42,355.58 = 18,757.40 : x
  2. Step 2: Convert to fraction form
    30,691.13/42,355.58 = 18,757.40/x
  3. Step 3: Cross multiply
    30,691.13x = 42,355.58 × 18,757.40
  4. Step 4: Simplify right side
    30,691.13x = 794,480,250.73
  5. Step 5: Solve for x
    x = 794,480,250.73/30,691.13
  6. Step 6: Final answer
    x = 25,886.32

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.