Home / 30,231.52-45,301.14-12,691.84

Finding the Fourth Proportional to 30,231.52, 45,301.14 and 12,691.84

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Solution

The fourth proportional to 30,231.52, 45,301.14 and 12,691.84 is: 19,018.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,231.52 : 45,301.14 = 12,691.84 : x
  2. Step 2: Convert to fraction form
    30,231.52/45,301.14 = 12,691.84/x
  3. Step 3: Cross multiply
    30,231.52x = 45,301.14 × 12,691.84
  4. Step 4: Simplify right side
    30,231.52x = 574,954,820.70
  5. Step 5: Solve for x
    x = 574,954,820.70/30,231.52
  6. Step 6: Final answer
    x = 19,018.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.