Home / 11,005.34-15,189.42-6,289.62

Finding the Fourth Proportional to 11,005.34, 15,189.42 and 6,289.62

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Solution

The fourth proportional to 11,005.34, 15,189.42 and 6,289.62 is: 8,680.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,005.34 : 15,189.42 = 6,289.62 : x
  2. Step 2: Convert to fraction form
    11,005.34/15,189.42 = 6,289.62/x
  3. Step 3: Cross multiply
    11,005.34x = 15,189.42 × 6,289.62
  4. Step 4: Simplify right side
    11,005.34x = 95,535,679.82
  5. Step 5: Solve for x
    x = 95,535,679.82/11,005.34
  6. Step 6: Final answer
    x = 8,680.85

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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.