Home / 21,572.60-29,770.31-12,618.36

Finding the Fourth Proportional to 21,572.60, 29,770.31 and 12,618.36

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Solution

The fourth proportional to 21,572.60, 29,770.31 and 12,618.36 is: 17,413.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,572.60 : 29,770.31 = 12,618.36 : x
  2. Step 2: Convert to fraction form
    21,572.60/29,770.31 = 12,618.36/x
  3. Step 3: Cross multiply
    21,572.60x = 29,770.31 × 12,618.36
  4. Step 4: Simplify right side
    21,572.60x = 375,652,520.44
  5. Step 5: Solve for x
    x = 375,652,520.44/21,572.60
  6. Step 6: Final answer
    x = 17,413.41

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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.