Home / 21,366.42-29,456.01-18,413.70

Finding the Fourth Proportional to 21,366.42, 29,456.01 and 18,413.70

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Solution

The fourth proportional to 21,366.42, 29,456.01 and 18,413.70 is: 25,385.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,366.42 : 29,456.01 = 18,413.70 : x
  2. Step 2: Convert to fraction form
    21,366.42/29,456.01 = 18,413.70/x
  3. Step 3: Cross multiply
    21,366.42x = 29,456.01 × 18,413.70
  4. Step 4: Simplify right side
    21,366.42x = 542,394,131.34
  5. Step 5: Solve for x
    x = 542,394,131.34/21,366.42
  6. Step 6: Final answer
    x = 25,385.35

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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.