Home / 38,635.82-53,318.75-21,640.79

Finding the Fourth Proportional to 38,635.82, 53,318.75 and 21,640.79

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Solution

The fourth proportional to 38,635.82, 53,318.75 and 21,640.79 is: 29,865.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,635.82 : 53,318.75 = 21,640.79 : x
  2. Step 2: Convert to fraction form
    38,635.82/53,318.75 = 21,640.79/x
  3. Step 3: Cross multiply
    38,635.82x = 53,318.75 × 21,640.79
  4. Step 4: Simplify right side
    38,635.82x = 1,153,859,763.61
  5. Step 5: Solve for x
    x = 1,153,859,763.61/38,635.82
  6. Step 6: Final answer
    x = 29,865.03

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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.