Home / 11,991.24-16,549.92-7,278.66

Finding the Fourth Proportional to 11,991.24, 16,549.92 and 7,278.66

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Solution

The fourth proportional to 11,991.24, 16,549.92 and 7,278.66 is: 10,045.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,991.24 : 16,549.92 = 7,278.66 : x
  2. Step 2: Convert to fraction form
    11,991.24/16,549.92 = 7,278.66/x
  3. Step 3: Cross multiply
    11,991.24x = 16,549.92 × 7,278.66
  4. Step 4: Simplify right side
    11,991.24x = 120,461,240.71
  5. Step 5: Solve for x
    x = 120,461,240.71/11,991.24
  6. Step 6: Final answer
    x = 10,045.77

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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.