Home / 27,679.29-38,196.41-15,103.77

Finding the Fourth Proportional to 27,679.29, 38,196.41 and 15,103.77

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Solution

The fourth proportional to 27,679.29, 38,196.41 and 15,103.77 is: 20,842.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,679.29 : 38,196.41 = 15,103.77 : x
  2. Step 2: Convert to fraction form
    27,679.29/38,196.41 = 15,103.77/x
  3. Step 3: Cross multiply
    27,679.29x = 38,196.41 × 15,103.77
  4. Step 4: Simplify right side
    27,679.29x = 576,909,715.95
  5. Step 5: Solve for x
    x = 576,909,715.95/27,679.29
  6. Step 6: Final answer
    x = 20,842.65

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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.