Home / 38,671.12-53,370.56-21,679.94

Finding the Fourth Proportional to 38,671.12, 53,370.56 and 21,679.94

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Solution

The fourth proportional to 38,671.12, 53,370.56 and 21,679.94 is: 29,920.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,671.12 : 53,370.56 = 21,679.94 : x
  2. Step 2: Convert to fraction form
    38,671.12/53,370.56 = 21,679.94/x
  3. Step 3: Cross multiply
    38,671.12x = 53,370.56 × 21,679.94
  4. Step 4: Simplify right side
    38,671.12x = 1,157,070,538.57
  5. Step 5: Solve for x
    x = 1,157,070,538.57/38,671.12
  6. Step 6: Final answer
    x = 29,920.79

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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.