Home / 39,234.09-54,144.11-21,330.32

Finding the Fourth Proportional to 39,234.09, 54,144.11 and 21,330.32

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Solution

The fourth proportional to 39,234.09, 54,144.11 and 21,330.32 is: 29,436.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,234.09 : 54,144.11 = 21,330.32 : x
  2. Step 2: Convert to fraction form
    39,234.09/54,144.11 = 21,330.32/x
  3. Step 3: Cross multiply
    39,234.09x = 54,144.11 × 21,330.32
  4. Step 4: Simplify right side
    39,234.09x = 1,154,911,221.12
  5. Step 5: Solve for x
    x = 1,154,911,221.12/39,234.09
  6. Step 6: Final answer
    x = 29,436.42

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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.