Home / 9,912.30-13,680.05-6,330.55

Finding the Fourth Proportional to 9,912.30, 13,680.05 and 6,330.55

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Solution

The fourth proportional to 9,912.30, 13,680.05 and 6,330.55 is: 8,736.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,912.30 : 13,680.05 = 6,330.55 : x
  2. Step 2: Convert to fraction form
    9,912.30/13,680.05 = 6,330.55/x
  3. Step 3: Cross multiply
    9,912.30x = 13,680.05 × 6,330.55
  4. Step 4: Simplify right side
    9,912.30x = 86,602,273.45
  5. Step 5: Solve for x
    x = 86,602,273.45/9,912.30
  6. Step 6: Final answer
    x = 8,736.85

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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.