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Finding the Fourth Proportional to 11,762.40, 16,232.38 and 6,456.90

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Solution

The fourth proportional to 11,762.40, 16,232.38 and 6,456.90 is: 8,910.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,762.40 : 16,232.38 = 6,456.90 : x
  2. Step 2: Convert to fraction form
    11,762.40/16,232.38 = 6,456.90/x
  3. Step 3: Cross multiply
    11,762.40x = 16,232.38 × 6,456.90
  4. Step 4: Simplify right side
    11,762.40x = 104,810,854.42
  5. Step 5: Solve for x
    x = 104,810,854.42/11,762.40
  6. Step 6: Final answer
    x = 8,910.67

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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.