Home / 38,439.21-53,046.06-21,672.21

Finding the Fourth Proportional to 38,439.21, 53,046.06 and 21,672.21

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Solution

The fourth proportional to 38,439.21, 53,046.06 and 21,672.21 is: 29,907.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,439.21 : 53,046.06 = 21,672.21 : x
  2. Step 2: Convert to fraction form
    38,439.21/53,046.06 = 21,672.21/x
  3. Step 3: Cross multiply
    38,439.21x = 53,046.06 × 21,672.21
  4. Step 4: Simplify right side
    38,439.21x = 1,149,625,351.99
  5. Step 5: Solve for x
    x = 1,149,625,351.99/38,439.21
  6. Step 6: Final answer
    x = 29,907.62

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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.