Home / 10,618.10-15,912.05-7,822.79

Finding the Fourth Proportional to 10,618.10, 15,912.05 and 7,822.79

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Solution

The fourth proportional to 10,618.10, 15,912.05 and 7,822.79 is: 11,723.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,618.10 : 15,912.05 = 7,822.79 : x
  2. Step 2: Convert to fraction form
    10,618.10/15,912.05 = 7,822.79/x
  3. Step 3: Cross multiply
    10,618.10x = 15,912.05 × 7,822.79
  4. Step 4: Simplify right side
    10,618.10x = 124,476,656.12
  5. Step 5: Solve for x
    x = 124,476,656.12/10,618.10
  6. Step 6: Final answer
    x = 11,723.06

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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.