Home / 28,476.41-42,673.05-20,151.90

Finding the Fourth Proportional to 28,476.41, 42,673.05 and 20,151.90

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Solution

The fourth proportional to 28,476.41, 42,673.05 and 20,151.90 is: 30,198.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,476.41 : 42,673.05 = 20,151.90 : x
  2. Step 2: Convert to fraction form
    28,476.41/42,673.05 = 20,151.90/x
  3. Step 3: Cross multiply
    28,476.41x = 42,673.05 × 20,151.90
  4. Step 4: Simplify right side
    28,476.41x = 859,943,036.30
  5. Step 5: Solve for x
    x = 859,943,036.30/28,476.41
  6. Step 6: Final answer
    x = 30,198.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.