Home / 15,127.85-20,877.21-8,413.61

Finding the Fourth Proportional to 15,127.85, 20,877.21 and 8,413.61

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Solution

The fourth proportional to 15,127.85, 20,877.21 and 8,413.61 is: 11,611.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,127.85 : 20,877.21 = 8,413.61 : x
  2. Step 2: Convert to fraction form
    15,127.85/20,877.21 = 8,413.61/x
  3. Step 3: Cross multiply
    15,127.85x = 20,877.21 × 8,413.61
  4. Step 4: Simplify right side
    15,127.85x = 175,652,702.83
  5. Step 5: Solve for x
    x = 175,652,702.83/15,127.85
  6. Step 6: Final answer
    x = 11,611.21

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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.