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Finding the Fourth Proportional to 10,998.80, 16,500.76 and 3,602.81

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Solution

The fourth proportional to 10,998.80, 16,500.76 and 3,602.81 is: 5,405.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,998.80 : 16,500.76 = 3,602.81 : x
  2. Step 2: Convert to fraction form
    10,998.80/16,500.76 = 3,602.81/x
  3. Step 3: Cross multiply
    10,998.80x = 16,500.76 × 3,602.81
  4. Step 4: Simplify right side
    10,998.80x = 59,449,011.62
  5. Step 5: Solve for x
    x = 59,449,011.62/10,998.80
  6. Step 6: Final answer
    x = 5,405.05

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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.