Home / 27,785.84-38,344.69-15,849.78

Finding the Fourth Proportional to 27,785.84, 38,344.69 and 15,849.78

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Solution

The fourth proportional to 27,785.84, 38,344.69 and 15,849.78 is: 21,872.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,785.84 : 38,344.69 = 15,849.78 : x
  2. Step 2: Convert to fraction form
    27,785.84/38,344.69 = 15,849.78/x
  3. Step 3: Cross multiply
    27,785.84x = 38,344.69 × 15,849.78
  4. Step 4: Simplify right side
    27,785.84x = 607,754,776.69
  5. Step 5: Solve for x
    x = 607,754,776.69/27,785.84
  6. Step 6: Final answer
    x = 21,872.83

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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.