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Finding the Fourth Proportional to 11,191.48, 15,444.78 and 6,715.48

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Solution

The fourth proportional to 11,191.48, 15,444.78 and 6,715.48 is: 9,267.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,191.48 : 15,444.78 = 6,715.48 : x
  2. Step 2: Convert to fraction form
    11,191.48/15,444.78 = 6,715.48/x
  3. Step 3: Cross multiply
    11,191.48x = 15,444.78 × 6,715.48
  4. Step 4: Simplify right side
    11,191.48x = 103,719,111.19
  5. Step 5: Solve for x
    x = 103,719,111.19/11,191.48
  6. Step 6: Final answer
    x = 9,267.68

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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.