Home / 11,689.56-16,134.60-6,656.64

Finding the Fourth Proportional to 11,689.56, 16,134.60 and 6,656.64

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Solution

The fourth proportional to 11,689.56, 16,134.60 and 6,656.64 is: 9,187.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,689.56 : 16,134.60 = 6,656.64 : x
  2. Step 2: Convert to fraction form
    11,689.56/16,134.60 = 6,656.64/x
  3. Step 3: Cross multiply
    11,689.56x = 16,134.60 × 6,656.64
  4. Step 4: Simplify right side
    11,689.56x = 107,402,223.74
  5. Step 5: Solve for x
    x = 107,402,223.74/11,689.56
  6. Step 6: Final answer
    x = 9,187.88

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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.