Home / 27,964.91-38,590.40-15,388.85

Finding the Fourth Proportional to 27,964.91, 38,590.40 and 15,388.85

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Solution

The fourth proportional to 27,964.91, 38,590.40 and 15,388.85 is: 21,235.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,964.91 : 38,590.40 = 15,388.85 : x
  2. Step 2: Convert to fraction form
    27,964.91/38,590.40 = 15,388.85/x
  3. Step 3: Cross multiply
    27,964.91x = 38,590.40 × 15,388.85
  4. Step 4: Simplify right side
    27,964.91x = 593,861,607.14
  5. Step 5: Solve for x
    x = 593,861,607.14/27,964.91
  6. Step 6: Final answer
    x = 21,235.96

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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.