Home / 39,297.80-54,231.32-21,392.89

Finding the Fourth Proportional to 39,297.80, 54,231.32 and 21,392.89

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Solution

The fourth proportional to 39,297.80, 54,231.32 and 21,392.89 is: 29,522.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,297.80 : 54,231.32 = 21,392.89 : x
  2. Step 2: Convert to fraction form
    39,297.80/54,231.32 = 21,392.89/x
  3. Step 3: Cross multiply
    39,297.80x = 54,231.32 × 21,392.89
  4. Step 4: Simplify right side
    39,297.80x = 1,160,164,663.31
  5. Step 5: Solve for x
    x = 1,160,164,663.31/39,297.80
  6. Step 6: Final answer
    x = 29,522.38

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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.