Home / 31,459.20-43,413.60-18,883.92

Finding the Fourth Proportional to 31,459.20, 43,413.60 and 18,883.92

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Solution

The fourth proportional to 31,459.20, 43,413.60 and 18,883.92 is: 26,059.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,459.20 : 43,413.60 = 18,883.92 : x
  2. Step 2: Convert to fraction form
    31,459.20/43,413.60 = 18,883.92/x
  3. Step 3: Cross multiply
    31,459.20x = 43,413.60 × 18,883.92
  4. Step 4: Simplify right side
    31,459.20x = 819,818,949.31
  5. Step 5: Solve for x
    x = 819,818,949.31/31,459.20
  6. Step 6: Final answer
    x = 26,059.75

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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.