Home / 11,679.60-16,117.88-6,643.71

Finding the Fourth Proportional to 11,679.60, 16,117.88 and 6,643.71

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Solution

The fourth proportional to 11,679.60, 16,117.88 and 6,643.71 is: 9,168.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,679.60 : 16,117.88 = 6,643.71 : x
  2. Step 2: Convert to fraction form
    11,679.60/16,117.88 = 6,643.71/x
  3. Step 3: Cross multiply
    11,679.60x = 16,117.88 × 6,643.71
  4. Step 4: Simplify right side
    11,679.60x = 107,082,487.32
  5. Step 5: Solve for x
    x = 107,082,487.32/11,679.60
  6. Step 6: Final answer
    x = 9,168.34

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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.