Home / 12,084.15-18,129.20-9,765.18

Finding the Fourth Proportional to 12,084.15, 18,129.20 and 9,765.18

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Solution

The fourth proportional to 12,084.15, 18,129.20 and 9,765.18 is: 14,650.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,084.15 : 18,129.20 = 9,765.18 : x
  2. Step 2: Convert to fraction form
    12,084.15/18,129.20 = 9,765.18/x
  3. Step 3: Cross multiply
    12,084.15x = 18,129.20 × 9,765.18
  4. Step 4: Simplify right side
    12,084.15x = 177,034,901.26
  5. Step 5: Solve for x
    x = 177,034,901.26/12,084.15
  6. Step 6: Final answer
    x = 14,650.17

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.