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Finding the Fourth Proportional to 11,167.31, 15,411.05 and 6,131.99

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Solution

The fourth proportional to 11,167.31, 15,411.05 and 6,131.99 is: 8,462.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,167.31 : 15,411.05 = 6,131.99 : x
  2. Step 2: Convert to fraction form
    11,167.31/15,411.05 = 6,131.99/x
  3. Step 3: Cross multiply
    11,167.31x = 15,411.05 × 6,131.99
  4. Step 4: Simplify right side
    11,167.31x = 94,500,296.77
  5. Step 5: Solve for x
    x = 94,500,296.77/11,167.31
  6. Step 6: Final answer
    x = 8,462.23

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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.