Home / 39,243.40-54,156-21,338.44

Finding the Fourth Proportional to 39,243.40, 54,156 and 21,338.44

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Solution

The fourth proportional to 39,243.40, 54,156 and 21,338.44 is: 29,447.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,243.40 : 54,156 = 21,338.44 : x
  2. Step 2: Convert to fraction form
    39,243.40/54,156 = 21,338.44/x
  3. Step 3: Cross multiply
    39,243.40x = 54,156 × 21,338.44
  4. Step 4: Simplify right side
    39,243.40x = 1,155,604,556.64
  5. Step 5: Solve for x
    x = 1,155,604,556.64/39,243.40
  6. Step 6: Final answer
    x = 29,447.11

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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.