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Finding the Fourth Proportional to 10,951.80, 16,403.40 and 8,764.80

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Solution

The fourth proportional to 10,951.80, 16,403.40 and 8,764.80 is: 13,127.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,951.80 : 16,403.40 = 8,764.80 : x
  2. Step 2: Convert to fraction form
    10,951.80/16,403.40 = 8,764.80/x
  3. Step 3: Cross multiply
    10,951.80x = 16,403.40 × 8,764.80
  4. Step 4: Simplify right side
    10,951.80x = 143,772,520.32
  5. Step 5: Solve for x
    x = 143,772,520.32/10,951.80
  6. Step 6: Final answer
    x = 13,127.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.