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Finding the Fourth Proportional to 11,159.50, 15,400.29 and 6,191.50

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Solution

The fourth proportional to 11,159.50, 15,400.29 and 6,191.50 is: 8,544.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,159.50 : 15,400.29 = 6,191.50 : x
  2. Step 2: Convert to fraction form
    11,159.50/15,400.29 = 6,191.50/x
  3. Step 3: Cross multiply
    11,159.50x = 15,400.29 × 6,191.50
  4. Step 4: Simplify right side
    11,159.50x = 95,350,895.54
  5. Step 5: Solve for x
    x = 95,350,895.54/11,159.50
  6. Step 6: Final answer
    x = 8,544.37

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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.