Home / 12,287.20-16,950.18-7,803.64

Finding the Fourth Proportional to 12,287.20, 16,950.18 and 7,803.64

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Solution

The fourth proportional to 12,287.20, 16,950.18 and 7,803.64 is: 10,765.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,287.20 : 16,950.18 = 7,803.64 : x
  2. Step 2: Convert to fraction form
    12,287.20/16,950.18 = 7,803.64/x
  3. Step 3: Cross multiply
    12,287.20x = 16,950.18 × 7,803.64
  4. Step 4: Simplify right side
    12,287.20x = 132,273,102.66
  5. Step 5: Solve for x
    x = 132,273,102.66/12,287.20
  6. Step 6: Final answer
    x = 10,765.11

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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.