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Finding the Fourth Proportional to 11,171.80, 16,757.70 and 9,746.20

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Solution

The fourth proportional to 11,171.80, 16,757.70 and 9,746.20 is: 14,619.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,171.80 : 16,757.70 = 9,746.20 : x
  2. Step 2: Convert to fraction form
    11,171.80/16,757.70 = 9,746.20/x
  3. Step 3: Cross multiply
    11,171.80x = 16,757.70 × 9,746.20
  4. Step 4: Simplify right side
    11,171.80x = 163,323,895.74
  5. Step 5: Solve for x
    x = 163,323,895.74/11,171.80
  6. Step 6: Final answer
    x = 14,619.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.