Home / 12,677.20-17,488.71-8,202.39

Finding the Fourth Proportional to 12,677.20, 17,488.71 and 8,202.39

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Solution

The fourth proportional to 12,677.20, 17,488.71 and 8,202.39 is: 11,315.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,677.20 : 17,488.71 = 8,202.39 : x
  2. Step 2: Convert to fraction form
    12,677.20/17,488.71 = 8,202.39/x
  3. Step 3: Cross multiply
    12,677.20x = 17,488.71 × 8,202.39
  4. Step 4: Simplify right side
    12,677.20x = 143,449,220.02
  5. Step 5: Solve for x
    x = 143,449,220.02/12,677.20
  6. Step 6: Final answer
    x = 11,315.53

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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.