Home / 28,175.67-38,882.48-15,428.95

Finding the Fourth Proportional to 28,175.67, 38,882.48 and 15,428.95

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Solution

The fourth proportional to 28,175.67, 38,882.48 and 15,428.95 is: 21,291.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,175.67 : 38,882.48 = 15,428.95 : x
  2. Step 2: Convert to fraction form
    28,175.67/38,882.48 = 15,428.95/x
  3. Step 3: Cross multiply
    28,175.67x = 38,882.48 × 15,428.95
  4. Step 4: Simplify right side
    28,175.67x = 599,915,665.45
  5. Step 5: Solve for x
    x = 599,915,665.45/28,175.67
  6. Step 6: Final answer
    x = 21,291.98

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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.