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Finding the Fourth Proportional to 14,120.88, 19,486.71 and 7,747.29

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Solution

The fourth proportional to 14,120.88, 19,486.71 and 7,747.29 is: 10,691.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,120.88 : 19,486.71 = 7,747.29 : x
  2. Step 2: Convert to fraction form
    14,120.88/19,486.71 = 7,747.29/x
  3. Step 3: Cross multiply
    14,120.88x = 19,486.71 × 7,747.29
  4. Step 4: Simplify right side
    14,120.88x = 150,969,193.52
  5. Step 5: Solve for x
    x = 150,969,193.52/14,120.88
  6. Step 6: Final answer
    x = 10,691.21

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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.