Home / 39,219.15-54,122.76-21,314.15

Finding the Fourth Proportional to 39,219.15, 54,122.76 and 21,314.15

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Solution

The fourth proportional to 39,219.15, 54,122.76 and 21,314.15 is: 29,413.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,219.15 : 54,122.76 = 21,314.15 : x
  2. Step 2: Convert to fraction form
    39,219.15/54,122.76 = 21,314.15/x
  3. Step 3: Cross multiply
    39,219.15x = 54,122.76 × 21,314.15
  4. Step 4: Simplify right side
    39,219.15x = 1,153,580,354.44
  5. Step 5: Solve for x
    x = 1,153,580,354.44/39,219.15
  6. Step 6: Final answer
    x = 29,413.70

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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.