Home / 38,931.38-53,725.31-21,026.39

Finding the Fourth Proportional to 38,931.38, 53,725.31 and 21,026.39

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Solution

The fourth proportional to 38,931.38, 53,725.31 and 21,026.39 is: 29,016.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,931.38 : 53,725.31 = 21,026.39 : x
  2. Step 2: Convert to fraction form
    38,931.38/53,725.31 = 21,026.39/x
  3. Step 3: Cross multiply
    38,931.38x = 53,725.31 × 21,026.39
  4. Step 4: Simplify right side
    38,931.38x = 1,129,649,320.93
  5. Step 5: Solve for x
    x = 1,129,649,320.93/38,931.38
  6. Step 6: Final answer
    x = 29,016.42

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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.