Home / 27,866.80-38,456.28-15,291.76

Finding the Fourth Proportional to 27,866.80, 38,456.28 and 15,291.76

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Solution

The fourth proportional to 27,866.80, 38,456.28 and 15,291.76 is: 21,102.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,866.80 : 38,456.28 = 15,291.76 : x
  2. Step 2: Convert to fraction form
    27,866.80/38,456.28 = 15,291.76/x
  3. Step 3: Cross multiply
    27,866.80x = 38,456.28 × 15,291.76
  4. Step 4: Simplify right side
    27,866.80x = 588,064,204.25
  5. Step 5: Solve for x
    x = 588,064,204.25/27,866.80
  6. Step 6: Final answer
    x = 21,102.68

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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.