Home / 39,297.60-54,228.92-21,392.15

Finding the Fourth Proportional to 39,297.60, 54,228.92 and 21,392.15

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Solution

The fourth proportional to 39,297.60, 54,228.92 and 21,392.15 is: 29,520.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,297.60 : 54,228.92 = 21,392.15 : x
  2. Step 2: Convert to fraction form
    39,297.60/54,228.92 = 21,392.15/x
  3. Step 3: Cross multiply
    39,297.60x = 54,228.92 × 21,392.15
  4. Step 4: Simplify right side
    39,297.60x = 1,160,072,812.87
  5. Step 5: Solve for x
    x = 1,160,072,812.87/39,297.60
  6. Step 6: Final answer
    x = 29,520.19

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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.