Home / 15,761.50-21,750.56-8,591.48

Finding the Fourth Proportional to 15,761.50, 21,750.56 and 8,591.48

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Solution

The fourth proportional to 15,761.50, 21,750.56 and 8,591.48 is: 11,856.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,761.50 : 21,750.56 = 8,591.48 : x
  2. Step 2: Convert to fraction form
    15,761.50/21,750.56 = 8,591.48/x
  3. Step 3: Cross multiply
    15,761.50x = 21,750.56 × 8,591.48
  4. Step 4: Simplify right side
    15,761.50x = 186,869,413.95
  5. Step 5: Solve for x
    x = 186,869,413.95/15,761.50
  6. Step 6: Final answer
    x = 11,856.07

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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.