Home / 27,855.08-38,440.11-15,108.36

Finding the Fourth Proportional to 27,855.08, 38,440.11 and 15,108.36

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Solution

The fourth proportional to 27,855.08, 38,440.11 and 15,108.36 is: 20,849.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,855.08 : 38,440.11 = 15,108.36 : x
  2. Step 2: Convert to fraction form
    27,855.08/38,440.11 = 15,108.36/x
  3. Step 3: Cross multiply
    27,855.08x = 38,440.11 × 15,108.36
  4. Step 4: Simplify right side
    27,855.08x = 580,767,020.32
  5. Step 5: Solve for x
    x = 580,767,020.32/27,855.08
  6. Step 6: Final answer
    x = 20,849.59

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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.