Home / 38,776.42-53,507.68-21,776.79

Finding the Fourth Proportional to 38,776.42, 53,507.68 and 21,776.79

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Solution

The fourth proportional to 38,776.42, 53,507.68 and 21,776.79 is: 30,049.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,776.42 : 53,507.68 = 21,776.79 : x
  2. Step 2: Convert to fraction form
    38,776.42/53,507.68 = 21,776.79/x
  3. Step 3: Cross multiply
    38,776.42x = 53,507.68 × 21,776.79
  4. Step 4: Simplify right side
    38,776.42x = 1,165,225,456.31
  5. Step 5: Solve for x
    x = 1,165,225,456.31/38,776.42
  6. Step 6: Final answer
    x = 30,049.85

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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.