Home / 39,049.80-53,888.64-21,144.75

Finding the Fourth Proportional to 39,049.80, 53,888.64 and 21,144.75

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Solution

The fourth proportional to 39,049.80, 53,888.64 and 21,144.75 is: 29,179.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,049.80 : 53,888.64 = 21,144.75 : x
  2. Step 2: Convert to fraction form
    39,049.80/53,888.64 = 21,144.75/x
  3. Step 3: Cross multiply
    39,049.80x = 53,888.64 × 21,144.75
  4. Step 4: Simplify right side
    39,049.80x = 1,139,461,658.20
  5. Step 5: Solve for x
    x = 1,139,461,658.20/39,049.80
  6. Step 6: Final answer
    x = 29,179.71

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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.