Home / 12,354.60-18,531.96-3,120.60

Finding the Fourth Proportional to 12,354.60, 18,531.96 and 3,120.60

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Solution

The fourth proportional to 12,354.60, 18,531.96 and 3,120.60 is: 4,680.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,354.60 : 18,531.96 = 3,120.60 : x
  2. Step 2: Convert to fraction form
    12,354.60/18,531.96 = 3,120.60/x
  3. Step 3: Cross multiply
    12,354.60x = 18,531.96 × 3,120.60
  4. Step 4: Simplify right side
    12,354.60x = 57,830,834.38
  5. Step 5: Solve for x
    x = 57,830,834.38/12,354.60
  6. Step 6: Final answer
    x = 4,680.92

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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.