Home / 27,930.12-38,538.05-15,665.92

Finding the Fourth Proportional to 27,930.12, 38,538.05 and 15,665.92

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Solution

The fourth proportional to 27,930.12, 38,538.05 and 15,665.92 is: 21,615.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,930.12 : 38,538.05 = 15,665.92 : x
  2. Step 2: Convert to fraction form
    27,930.12/38,538.05 = 15,665.92/x
  3. Step 3: Cross multiply
    27,930.12x = 38,538.05 × 15,665.92
  4. Step 4: Simplify right side
    27,930.12x = 603,733,737.24
  5. Step 5: Solve for x
    x = 603,733,737.24/27,930.12
  6. Step 6: Final answer
    x = 21,615.87

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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.