Home / 12,121.61-18,180.35-3,354.47

Finding the Fourth Proportional to 12,121.61, 18,180.35 and 3,354.47

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Solution

The fourth proportional to 12,121.61, 18,180.35 and 3,354.47 is: 5,031.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,121.61 : 18,180.35 = 3,354.47 : x
  2. Step 2: Convert to fraction form
    12,121.61/18,180.35 = 3,354.47/x
  3. Step 3: Cross multiply
    12,121.61x = 18,180.35 × 3,354.47
  4. Step 4: Simplify right side
    12,121.61x = 60,985,330.99
  5. Step 5: Solve for x
    x = 60,985,330.99/12,121.61
  6. Step 6: Final answer
    x = 5,031.13

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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.