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Finding the Fourth Proportional to 11,223.87, 15,483.96 and 7,865.45

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Solution

The fourth proportional to 11,223.87, 15,483.96 and 7,865.45 is: 10,850.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,223.87 : 15,483.96 = 7,865.45 : x
  2. Step 2: Convert to fraction form
    11,223.87/15,483.96 = 7,865.45/x
  3. Step 3: Cross multiply
    11,223.87x = 15,483.96 × 7,865.45
  4. Step 4: Simplify right side
    11,223.87x = 121,788,380.92
  5. Step 5: Solve for x
    x = 121,788,380.92/11,223.87
  6. Step 6: Final answer
    x = 10,850.84

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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.