Home / 13,132.32-18,142.35-8,605.75

Finding the Fourth Proportional to 13,132.32, 18,142.35 and 8,605.75

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Solution

The fourth proportional to 13,132.32, 18,142.35 and 8,605.75 is: 11,888.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,132.32 : 18,142.35 = 8,605.75 : x
  2. Step 2: Convert to fraction form
    13,132.32/18,142.35 = 8,605.75/x
  3. Step 3: Cross multiply
    13,132.32x = 18,142.35 × 8,605.75
  4. Step 4: Simplify right side
    13,132.32x = 156,128,533.31
  5. Step 5: Solve for x
    x = 156,128,533.31/13,132.32
  6. Step 6: Final answer
    x = 11,888.88

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Half scale
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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.