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Finding the Fourth Proportional to 11,218.71, 15,481.53 and 6,502.71

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Solution

The fourth proportional to 11,218.71, 15,481.53 and 6,502.71 is: 8,973.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,218.71 : 15,481.53 = 6,502.71 : x
  2. Step 2: Convert to fraction form
    11,218.71/15,481.53 = 6,502.71/x
  3. Step 3: Cross multiply
    11,218.71x = 15,481.53 × 6,502.71
  4. Step 4: Simplify right side
    11,218.71x = 100,671,899.95
  5. Step 5: Solve for x
    x = 100,671,899.95/11,218.71
  6. Step 6: Final answer
    x = 8,973.57

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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.