Home / 11,991.55-16,549.84-6,888.66

Finding the Fourth Proportional to 11,991.55, 16,549.84 and 6,888.66

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Solution

The fourth proportional to 11,991.55, 16,549.84 and 6,888.66 is: 9,507.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,991.55 : 16,549.84 = 6,888.66 : x
  2. Step 2: Convert to fraction form
    11,991.55/16,549.84 = 6,888.66/x
  3. Step 3: Cross multiply
    11,991.55x = 16,549.84 × 6,888.66
  4. Step 4: Simplify right side
    11,991.55x = 114,006,220.81
  5. Step 5: Solve for x
    x = 114,006,220.81/11,991.55
  6. Step 6: Final answer
    x = 9,507.21

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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.