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Finding the Fourth Proportional to 10,961.34, 16,477.65 and 8,793.78

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Solution

The fourth proportional to 10,961.34, 16,477.65 and 8,793.78 is: 13,219.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,961.34 : 16,477.65 = 8,793.78 : x
  2. Step 2: Convert to fraction form
    10,961.34/16,477.65 = 8,793.78/x
  3. Step 3: Cross multiply
    10,961.34x = 16,477.65 × 8,793.78
  4. Step 4: Simplify right side
    10,961.34x = 144,900,829.02
  5. Step 5: Solve for x
    x = 144,900,829.02/10,961.34
  6. Step 6: Final answer
    x = 13,219.26

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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.