Home / 12,155.04-18,232.48-3,390

Finding the Fourth Proportional to 12,155.04, 18,232.48 and 3,390

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Solution

The fourth proportional to 12,155.04, 18,232.48 and 3,390 is: 5,084.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,155.04 : 18,232.48 = 3,390 : x
  2. Step 2: Convert to fraction form
    12,155.04/18,232.48 = 3,390/x
  3. Step 3: Cross multiply
    12,155.04x = 18,232.48 × 3,390
  4. Step 4: Simplify right side
    12,155.04x = 61,808,107.20
  5. Step 5: Solve for x
    x = 61,808,107.20/12,155.04
  6. Step 6: Final answer
    x = 5,084.98

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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.