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Finding the Fourth Proportional to 11,980.31, 16,531.29 and 6,674.40

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Solution

The fourth proportional to 11,980.31, 16,531.29 and 6,674.40 is: 9,209.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,980.31 : 16,531.29 = 6,674.40 : x
  2. Step 2: Convert to fraction form
    11,980.31/16,531.29 = 6,674.40/x
  3. Step 3: Cross multiply
    11,980.31x = 16,531.29 × 6,674.40
  4. Step 4: Simplify right side
    11,980.31x = 110,336,441.98
  5. Step 5: Solve for x
    x = 110,336,441.98/11,980.31
  6. Step 6: Final answer
    x = 9,209.82

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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.