Home / 28,370.88-39,151.12-15,795.36

Finding the Fourth Proportional to 28,370.88, 39,151.12 and 15,795.36

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Solution

The fourth proportional to 28,370.88, 39,151.12 and 15,795.36 is: 21,797.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,370.88 : 39,151.12 = 15,795.36 : x
  2. Step 2: Convert to fraction form
    28,370.88/39,151.12 = 15,795.36/x
  3. Step 3: Cross multiply
    28,370.88x = 39,151.12 × 15,795.36
  4. Step 4: Simplify right side
    28,370.88x = 618,406,034.80
  5. Step 5: Solve for x
    x = 618,406,034.80/28,370.88
  6. Step 6: Final answer
    x = 21,797.21

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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.