Home / 30,100.12-45,132.36-12,325.48

Finding the Fourth Proportional to 30,100.12, 45,132.36 and 12,325.48

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Solution

The fourth proportional to 30,100.12, 45,132.36 and 12,325.48 is: 18,480.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,100.12 : 45,132.36 = 12,325.48 : x
  2. Step 2: Convert to fraction form
    30,100.12/45,132.36 = 12,325.48/x
  3. Step 3: Cross multiply
    30,100.12x = 45,132.36 × 12,325.48
  4. Step 4: Simplify right side
    30,100.12x = 556,278,000.53
  5. Step 5: Solve for x
    x = 556,278,000.53/30,100.12
  6. Step 6: Final answer
    x = 18,480.92

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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.