Home / 10,887.95-15,019.66-8,230.75

Finding the Fourth Proportional to 10,887.95, 15,019.66 and 8,230.75

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Solution

The fourth proportional to 10,887.95, 15,019.66 and 8,230.75 is: 11,354.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,887.95 : 15,019.66 = 8,230.75 : x
  2. Step 2: Convert to fraction form
    10,887.95/15,019.66 = 8,230.75/x
  3. Step 3: Cross multiply
    10,887.95x = 15,019.66 × 8,230.75
  4. Step 4: Simplify right side
    10,887.95x = 123,623,066.55
  5. Step 5: Solve for x
    x = 123,623,066.55/10,887.95
  6. Step 6: Final answer
    x = 11,354.12

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Half scale
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Double 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.