Home / 12,355.80-18,538.02-3,591.24

Finding the Fourth Proportional to 12,355.80, 18,538.02 and 3,591.24

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Solution

The fourth proportional to 12,355.80, 18,538.02 and 3,591.24 is: 5,388.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,355.80 : 18,538.02 = 3,591.24 : x
  2. Step 2: Convert to fraction form
    12,355.80/18,538.02 = 3,591.24/x
  3. Step 3: Cross multiply
    12,355.80x = 18,538.02 × 3,591.24
  4. Step 4: Simplify right side
    12,355.80x = 66,574,478.94
  5. Step 5: Solve for x
    x = 66,574,478.94/12,355.80
  6. Step 6: Final answer
    x = 5,388.12

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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.