Home / 11,489.11-15,856.70-7,015.47

Finding the Fourth Proportional to 11,489.11, 15,856.70 and 7,015.47

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Solution

The fourth proportional to 11,489.11, 15,856.70 and 7,015.47 is: 9,682.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,489.11 : 15,856.70 = 7,015.47 : x
  2. Step 2: Convert to fraction form
    11,489.11/15,856.70 = 7,015.47/x
  3. Step 3: Cross multiply
    11,489.11x = 15,856.70 × 7,015.47
  4. Step 4: Simplify right side
    11,489.11x = 111,242,203.15
  5. Step 5: Solve for x
    x = 111,242,203.15/11,489.11
  6. Step 6: Final answer
    x = 9,682.40

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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.