Home / 9,415.16-12,986.10-7,996.61

Finding the Fourth Proportional to 9,415.16, 12,986.10 and 7,996.61

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Solution

The fourth proportional to 9,415.16, 12,986.10 and 7,996.61 is: 11,029.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,415.16 : 12,986.10 = 7,996.61 : x
  2. Step 2: Convert to fraction form
    9,415.16/12,986.10 = 7,996.61/x
  3. Step 3: Cross multiply
    9,415.16x = 12,986.10 × 7,996.61
  4. Step 4: Simplify right side
    9,415.16x = 103,844,712.19
  5. Step 5: Solve for x
    x = 103,844,712.19/9,415.16
  6. Step 6: Final answer
    x = 11,029.53

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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.