Home / 10,912.78-15,059.94-6,436.12

Finding the Fourth Proportional to 10,912.78, 15,059.94 and 6,436.12

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Solution

The fourth proportional to 10,912.78, 15,059.94 and 6,436.12 is: 8,882.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,912.78 : 15,059.94 = 6,436.12 : x
  2. Step 2: Convert to fraction form
    10,912.78/15,059.94 = 6,436.12/x
  3. Step 3: Cross multiply
    10,912.78x = 15,059.94 × 6,436.12
  4. Step 4: Simplify right side
    10,912.78x = 96,927,581.03
  5. Step 5: Solve for x
    x = 96,927,581.03/10,912.78
  6. Step 6: Final answer
    x = 8,882.02

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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.