Home / 12,084.24-16,678.12-6,781.20

Finding the Fourth Proportional to 12,084.24, 16,678.12 and 6,781.20

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Solution

The fourth proportional to 12,084.24, 16,678.12 and 6,781.20 is: 9,359.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,084.24 : 16,678.12 = 6,781.20 : x
  2. Step 2: Convert to fraction form
    12,084.24/16,678.12 = 6,781.20/x
  3. Step 3: Cross multiply
    12,084.24x = 16,678.12 × 6,781.20
  4. Step 4: Simplify right side
    12,084.24x = 113,097,667.34
  5. Step 5: Solve for x
    x = 113,097,667.34/12,084.24
  6. Step 6: Final answer
    x = 9,359.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.