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Finding the Fourth Proportional to 11,750.70, 16,216.02 and 6,445.56

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Solution

The fourth proportional to 11,750.70, 16,216.02 and 6,445.56 is: 8,894.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,750.70 : 16,216.02 = 6,445.56 : x
  2. Step 2: Convert to fraction form
    11,750.70/16,216.02 = 6,445.56/x
  3. Step 3: Cross multiply
    11,750.70x = 16,216.02 × 6,445.56
  4. Step 4: Simplify right side
    11,750.70x = 104,521,329.87
  5. Step 5: Solve for x
    x = 104,521,329.87/11,750.70
  6. Step 6: Final answer
    x = 8,894.90

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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.