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Finding the Fourth Proportional to 13,761.30, 18,998.48 and 9,059.25

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Solution

The fourth proportional to 13,761.30, 18,998.48 and 9,059.25 is: 12,506.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,761.30 : 18,998.48 = 9,059.25 : x
  2. Step 2: Convert to fraction form
    13,761.30/18,998.48 = 9,059.25/x
  3. Step 3: Cross multiply
    13,761.30x = 18,998.48 × 9,059.25
  4. Step 4: Simplify right side
    13,761.30x = 172,111,934.64
  5. Step 5: Solve for x
    x = 172,111,934.64/13,761.30
  6. Step 6: Final answer
    x = 12,506.95

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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.