Home / 12,384.24-17,084.56-7,905.75

Finding the Fourth Proportional to 12,384.24, 17,084.56 and 7,905.75

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Solution

The fourth proportional to 12,384.24, 17,084.56 and 7,905.75 is: 10,906.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,384.24 : 17,084.56 = 7,905.75 : x
  2. Step 2: Convert to fraction form
    12,384.24/17,084.56 = 7,905.75/x
  3. Step 3: Cross multiply
    12,384.24x = 17,084.56 × 7,905.75
  4. Step 4: Simplify right side
    12,384.24x = 135,066,260.22
  5. Step 5: Solve for x
    x = 135,066,260.22/12,384.24
  6. Step 6: Final answer
    x = 10,906.30

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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.