Home / 38,917.82-53,702.70-21,921.59

Finding the Fourth Proportional to 38,917.82, 53,702.70 and 21,921.59

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Solution

The fourth proportional to 38,917.82, 53,702.70 and 21,921.59 is: 30,249.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,917.82 : 53,702.70 = 21,921.59 : x
  2. Step 2: Convert to fraction form
    38,917.82/53,702.70 = 21,921.59/x
  3. Step 3: Cross multiply
    38,917.82x = 53,702.70 × 21,921.59
  4. Step 4: Simplify right side
    38,917.82x = 1,177,248,302.78
  5. Step 5: Solve for x
    x = 1,177,248,302.78/38,917.82
  6. Step 6: Final answer
    x = 30,249.60

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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.