Home / 12,186.14-18,280.60-6,647.58

Finding the Fourth Proportional to 12,186.14, 18,280.60 and 6,647.58

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Solution

The fourth proportional to 12,186.14, 18,280.60 and 6,647.58 is: 9,972.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,186.14 : 18,280.60 = 6,647.58 : x
  2. Step 2: Convert to fraction form
    12,186.14/18,280.60 = 6,647.58/x
  3. Step 3: Cross multiply
    12,186.14x = 18,280.60 × 6,647.58
  4. Step 4: Simplify right side
    12,186.14x = 121,521,750.95
  5. Step 5: Solve for x
    x = 121,521,750.95/12,186.14
  6. Step 6: Final answer
    x = 9,972.13

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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.