Home / 13,418.30-20,029.35-12,442.52

Finding the Fourth Proportional to 13,418.30, 20,029.35 and 12,442.52

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Solution

The fourth proportional to 13,418.30, 20,029.35 and 12,442.52 is: 18,572.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,418.30 : 20,029.35 = 12,442.52 : x
  2. Step 2: Convert to fraction form
    13,418.30/20,029.35 = 12,442.52/x
  3. Step 3: Cross multiply
    13,418.30x = 20,029.35 × 12,442.52
  4. Step 4: Simplify right side
    13,418.30x = 249,215,684.69
  5. Step 5: Solve for x
    x = 249,215,684.69/13,418.30
  6. Step 6: Final answer
    x = 18,572.82

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.