Home / 27,855.51-38,440.40-15,108.65

Finding the Fourth Proportional to 27,855.51, 38,440.40 and 15,108.65

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Solution

The fourth proportional to 27,855.51, 38,440.40 and 15,108.65 is: 20,849.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,855.51 : 38,440.40 = 15,108.65 : x
  2. Step 2: Convert to fraction form
    27,855.51/38,440.40 = 15,108.65/x
  3. Step 3: Cross multiply
    27,855.51x = 38,440.40 × 15,108.65
  4. Step 4: Simplify right side
    27,855.51x = 580,782,473.92
  5. Step 5: Solve for x
    x = 580,782,473.92/27,855.51
  6. Step 6: Final answer
    x = 20,849.83

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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.