Home / 11,242.12-15,511.40-7,207.10

Finding the Fourth Proportional to 11,242.12, 15,511.40 and 7,207.10

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Solution

The fourth proportional to 11,242.12, 15,511.40 and 7,207.10 is: 9,944.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,242.12 : 15,511.40 = 7,207.10 : x
  2. Step 2: Convert to fraction form
    11,242.12/15,511.40 = 7,207.10/x
  3. Step 3: Cross multiply
    11,242.12x = 15,511.40 × 7,207.10
  4. Step 4: Simplify right side
    11,242.12x = 111,792,210.94
  5. Step 5: Solve for x
    x = 111,792,210.94/11,242.12
  6. Step 6: Final answer
    x = 9,944.05

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.