Home / 15,661,517.54-21,613,041.60-8,786,147.18

Finding the Fourth Proportional to 15,661,517.54, 21,613,041.60 and 8,786,147.18

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Solution

The fourth proportional to 15,661,517.54, 21,613,041.60 and 8,786,147.18 is: 12,124,965.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,661,517.54 : 21,613,041.60 = 8,786,147.18 : x
  2. Step 2: Convert to fraction form
    15,661,517.54/21,613,041.60 = 8,786,147.18/x
  3. Step 3: Cross multiply
    15,661,517.54x = 21,613,041.60 × 8,786,147.18
  4. Step 4: Simplify right side
    15,661,517.54x = 189,895,364,505,062.69
  5. Step 5: Solve for x
    x = 189,895,364,505,062.69/15,661,517.54
  6. Step 6: Final answer
    x = 12,124,965.80

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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.