Home / 27,638.49-38,141.13-15,701.85

Finding the Fourth Proportional to 27,638.49, 38,141.13 and 15,701.85

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Solution

The fourth proportional to 27,638.49, 38,141.13 and 15,701.85 is: 21,668.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,638.49 : 38,141.13 = 15,701.85 : x
  2. Step 2: Convert to fraction form
    27,638.49/38,141.13 = 15,701.85/x
  3. Step 3: Cross multiply
    27,638.49x = 38,141.13 × 15,701.85
  4. Step 4: Simplify right side
    27,638.49x = 598,886,272.65
  5. Step 5: Solve for x
    x = 598,886,272.65/27,638.49
  6. Step 6: Final answer
    x = 21,668.56

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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.