Home / 10,290.80-15,436.20-3,365.30

Finding the Fourth Proportional to 10,290.80, 15,436.20 and 3,365.30

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Solution

The fourth proportional to 10,290.80, 15,436.20 and 3,365.30 is: 5,047.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,290.80 : 15,436.20 = 3,365.30 : x
  2. Step 2: Convert to fraction form
    10,290.80/15,436.20 = 3,365.30/x
  3. Step 3: Cross multiply
    10,290.80x = 15,436.20 × 3,365.30
  4. Step 4: Simplify right side
    10,290.80x = 51,947,443.86
  5. Step 5: Solve for x
    x = 51,947,443.86/10,290.80
  6. Step 6: Final answer
    x = 5,047.95

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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.