Home / 11,475.06-15,806.08-8,112.09

Finding the Fourth Proportional to 11,475.06, 15,806.08 and 8,112.09

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Solution

The fourth proportional to 11,475.06, 15,806.08 and 8,112.09 is: 11,173.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,475.06 : 15,806.08 = 8,112.09 : x
  2. Step 2: Convert to fraction form
    11,475.06/15,806.08 = 8,112.09/x
  3. Step 3: Cross multiply
    11,475.06x = 15,806.08 × 8,112.09
  4. Step 4: Simplify right side
    11,475.06x = 128,220,343.51
  5. Step 5: Solve for x
    x = 128,220,343.51/11,475.06
  6. Step 6: Final answer
    x = 11,173.83

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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.