Home / 11,866.88-16,376.60-6,561.76

Finding the Fourth Proportional to 11,866.88, 16,376.60 and 6,561.76

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Solution

The fourth proportional to 11,866.88, 16,376.60 and 6,561.76 is: 9,055.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,866.88 : 16,376.60 = 6,561.76 : x
  2. Step 2: Convert to fraction form
    11,866.88/16,376.60 = 6,561.76/x
  3. Step 3: Cross multiply
    11,866.88x = 16,376.60 × 6,561.76
  4. Step 4: Simplify right side
    11,866.88x = 107,459,318.82
  5. Step 5: Solve for x
    x = 107,459,318.82/11,866.88
  6. Step 6: Final answer
    x = 9,055.40

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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.