Home / 39,340.11-54,287.82-21,435.25

Finding the Fourth Proportional to 39,340.11, 54,287.82 and 21,435.25

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Solution

The fourth proportional to 39,340.11, 54,287.82 and 21,435.25 is: 29,579.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,340.11 : 54,287.82 = 21,435.25 : x
  2. Step 2: Convert to fraction form
    39,340.11/54,287.82 = 21,435.25/x
  3. Step 3: Cross multiply
    39,340.11x = 54,287.82 × 21,435.25
  4. Step 4: Simplify right side
    39,340.11x = 1,163,672,911.52
  5. Step 5: Solve for x
    x = 1,163,672,911.52/39,340.11
  6. Step 6: Final answer
    x = 29,579.81

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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.