Home / 13,131.23-18,114.08-8,876.70

Finding the Fourth Proportional to 13,131.23, 18,114.08 and 8,876.70

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Solution

The fourth proportional to 13,131.23, 18,114.08 and 8,876.70 is: 12,245.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,131.23 : 18,114.08 = 8,876.70 : x
  2. Step 2: Convert to fraction form
    13,131.23/18,114.08 = 8,876.70/x
  3. Step 3: Cross multiply
    13,131.23x = 18,114.08 × 8,876.70
  4. Step 4: Simplify right side
    13,131.23x = 160,793,209.55
  5. Step 5: Solve for x
    x = 160,793,209.55/13,131.23
  6. Step 6: Final answer
    x = 12,245.10

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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.