Home / 28,290.20-42,395.06-20,836.04

Finding the Fourth Proportional to 28,290.20, 42,395.06 and 20,836.04

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Solution

The fourth proportional to 28,290.20, 42,395.06 and 20,836.04 is: 31,224.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,290.20 : 42,395.06 = 20,836.04 : x
  2. Step 2: Convert to fraction form
    28,290.20/42,395.06 = 20,836.04/x
  3. Step 3: Cross multiply
    28,290.20x = 42,395.06 × 20,836.04
  4. Step 4: Simplify right side
    28,290.20x = 883,345,006.08
  5. Step 5: Solve for x
    x = 883,345,006.08/28,290.20
  6. Step 6: Final answer
    x = 31,224.42

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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.