Home / 11,387.45-15,714.77-6,351.99

Finding the Fourth Proportional to 11,387.45, 15,714.77 and 6,351.99

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Solution

The fourth proportional to 11,387.45, 15,714.77 and 6,351.99 is: 8,765.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,387.45 : 15,714.77 = 6,351.99 : x
  2. Step 2: Convert to fraction form
    11,387.45/15,714.77 = 6,351.99/x
  3. Step 3: Cross multiply
    11,387.45x = 15,714.77 × 6,351.99
  4. Step 4: Simplify right side
    11,387.45x = 99,820,061.89
  5. Step 5: Solve for x
    x = 99,820,061.89/11,387.45
  6. Step 6: Final answer
    x = 8,765.80

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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.