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Finding the Fourth Proportional to 11,470.80, 17,191.08 and 8,868.72

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Solution

The fourth proportional to 11,470.80, 17,191.08 and 8,868.72 is: 13,291.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,470.80 : 17,191.08 = 8,868.72 : x
  2. Step 2: Convert to fraction form
    11,470.80/17,191.08 = 8,868.72/x
  3. Step 3: Cross multiply
    11,470.80x = 17,191.08 × 8,868.72
  4. Step 4: Simplify right side
    11,470.80x = 152,462,875.02
  5. Step 5: Solve for x
    x = 152,462,875.02/11,470.80
  6. Step 6: Final answer
    x = 13,291.39

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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.