Home / 13,140.20-18,126.18-8,954.60

Finding the Fourth Proportional to 13,140.20, 18,126.18 and 8,954.60

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Solution

The fourth proportional to 13,140.20, 18,126.18 and 8,954.60 is: 12,352.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,140.20 : 18,126.18 = 8,954.60 : x
  2. Step 2: Convert to fraction form
    13,140.20/18,126.18 = 8,954.60/x
  3. Step 3: Cross multiply
    13,140.20x = 18,126.18 × 8,954.60
  4. Step 4: Simplify right side
    13,140.20x = 162,312,691.43
  5. Step 5: Solve for x
    x = 162,312,691.43/13,140.20
  6. Step 6: Final answer
    x = 12,352.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.