Home / 12,380.52-18,554.36-9,078.15

Finding the Fourth Proportional to 12,380.52, 18,554.36 and 9,078.15

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Solution

The fourth proportional to 12,380.52, 18,554.36 and 9,078.15 is: 13,605.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,380.52 : 18,554.36 = 9,078.15 : x
  2. Step 2: Convert to fraction form
    12,380.52/18,554.36 = 9,078.15/x
  3. Step 3: Cross multiply
    12,380.52x = 18,554.36 × 9,078.15
  4. Step 4: Simplify right side
    12,380.52x = 168,439,217.84
  5. Step 5: Solve for x
    x = 168,439,217.84/12,380.52
  6. Step 6: Final answer
    x = 13,605.18

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1.5x scale

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.