Home / 13,152.20-18,131.16-8,113.02

Finding the Fourth Proportional to 13,152.20, 18,131.16 and 8,113.02

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Solution

The fourth proportional to 13,152.20, 18,131.16 and 8,113.02 is: 11,184.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,152.20 : 18,131.16 = 8,113.02 : x
  2. Step 2: Convert to fraction form
    13,152.20/18,131.16 = 8,113.02/x
  3. Step 3: Cross multiply
    13,152.20x = 18,131.16 × 8,113.02
  4. Step 4: Simplify right side
    13,152.20x = 147,098,468.47
  5. Step 5: Solve for x
    x = 147,098,468.47/13,152.20
  6. Step 6: Final answer
    x = 11,184.32

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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.