Home / 10,869.12-16,303.68-3,942

Finding the Fourth Proportional to 10,869.12, 16,303.68 and 3,942

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Solution

The fourth proportional to 10,869.12, 16,303.68 and 3,942 is: 5,913

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,869.12 : 16,303.68 = 3,942 : x
  2. Step 2: Convert to fraction form
    10,869.12/16,303.68 = 3,942/x
  3. Step 3: Cross multiply
    10,869.12x = 16,303.68 × 3,942
  4. Step 4: Simplify right side
    10,869.12x = 64,269,106.56
  5. Step 5: Solve for x
    x = 64,269,106.56/10,869.12
  6. Step 6: Final answer
    x = 5,913

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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.