Home / 39,219.32-54,122.74-21,314.18

Finding the Fourth Proportional to 39,219.32, 54,122.74 and 21,314.18

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Solution

The fourth proportional to 39,219.32, 54,122.74 and 21,314.18 is: 29,413.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,219.32 : 54,122.74 = 21,314.18 : x
  2. Step 2: Convert to fraction form
    39,219.32/54,122.74 = 21,314.18/x
  3. Step 3: Cross multiply
    39,219.32x = 54,122.74 × 21,314.18
  4. Step 4: Simplify right side
    39,219.32x = 1,153,581,822.45
  5. Step 5: Solve for x
    x = 1,153,581,822.45/39,219.32
  6. Step 6: Final answer
    x = 29,413.61

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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.