Home / 28,167,839.35-38,871,846.57-15,609,103.78

Finding the Fourth Proportional to 28,167,839.35, 38,871,846.57 and 15,609,103.78

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Solution

The fourth proportional to 28,167,839.35, 38,871,846.57 and 15,609,103.78 is: 21,540,689.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,167,839.35 : 38,871,846.57 = 15,609,103.78 : x
  2. Step 2: Convert to fraction form
    28,167,839.35/38,871,846.57 = 15,609,103.78/x
  3. Step 3: Cross multiply
    28,167,839.35x = 38,871,846.57 × 15,609,103.78
  4. Step 4: Simplify right side
    28,167,839.35x = 606,754,687,231,367
  5. Step 5: Solve for x
    x = 606,754,687,231,367/28,167,839.35
  6. Step 6: Final answer
    x = 21,540,689.71

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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.