Home / 39,255.32-54,170.78-21,350.31

Finding the Fourth Proportional to 39,255.32, 54,170.78 and 21,350.31

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Solution

The fourth proportional to 39,255.32, 54,170.78 and 21,350.31 is: 29,462.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,255.32 : 54,170.78 = 21,350.31 : x
  2. Step 2: Convert to fraction form
    39,255.32/54,170.78 = 21,350.31/x
  3. Step 3: Cross multiply
    39,255.32x = 54,170.78 × 21,350.31
  4. Step 4: Simplify right side
    39,255.32x = 1,156,562,839.19
  5. Step 5: Solve for x
    x = 1,156,562,839.19/39,255.32
  6. Step 6: Final answer
    x = 29,462.58

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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.