Home / 27,638.67-38,141.51-15,702.68

Finding the Fourth Proportional to 27,638.67, 38,141.51 and 15,702.68

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Solution

The fourth proportional to 27,638.67, 38,141.51 and 15,702.68 is: 21,669.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,638.67 : 38,141.51 = 15,702.68 : x
  2. Step 2: Convert to fraction form
    27,638.67/38,141.51 = 15,702.68/x
  3. Step 3: Cross multiply
    27,638.67x = 38,141.51 × 15,702.68
  4. Step 4: Simplify right side
    27,638.67x = 598,923,926.25
  5. Step 5: Solve for x
    x = 598,923,926.25/27,638.67
  6. Step 6: Final answer
    x = 21,669.78

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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.