Home / 38,635.72-53,315.94-21,868.36

Finding the Fourth Proportional to 38,635.72, 53,315.94 and 21,868.36

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Solution

The fourth proportional to 38,635.72, 53,315.94 and 21,868.36 is: 30,177.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,635.72 : 53,315.94 = 21,868.36 : x
  2. Step 2: Convert to fraction form
    38,635.72/53,315.94 = 21,868.36/x
  3. Step 3: Cross multiply
    38,635.72x = 53,315.94 × 21,868.36
  4. Step 4: Simplify right side
    38,635.72x = 1,165,932,169.66
  5. Step 5: Solve for x
    x = 1,165,932,169.66/38,635.72
  6. Step 6: Final answer
    x = 30,177.57

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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.