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Finding the Fourth Proportional to 11,776.40, 17,693.40 and 8,860.40

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Solution

The fourth proportional to 11,776.40, 17,693.40 and 8,860.40 is: 13,312.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,776.40 : 17,693.40 = 8,860.40 : x
  2. Step 2: Convert to fraction form
    11,776.40/17,693.40 = 8,860.40/x
  3. Step 3: Cross multiply
    11,776.40x = 17,693.40 × 8,860.40
  4. Step 4: Simplify right side
    11,776.40x = 156,770,601.36
  5. Step 5: Solve for x
    x = 156,770,601.36/11,776.40
  6. Step 6: Final answer
    x = 13,312.27

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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.