Home / 10,815.04-16,222.68-3,419.32

Finding the Fourth Proportional to 10,815.04, 16,222.68 and 3,419.32

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Solution

The fourth proportional to 10,815.04, 16,222.68 and 3,419.32 is: 5,129.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,815.04 : 16,222.68 = 3,419.32 : x
  2. Step 2: Convert to fraction form
    10,815.04/16,222.68 = 3,419.32/x
  3. Step 3: Cross multiply
    10,815.04x = 16,222.68 × 3,419.32
  4. Step 4: Simplify right side
    10,815.04x = 55,470,534.18
  5. Step 5: Solve for x
    x = 55,470,534.18/10,815.04
  6. Step 6: Final answer
    x = 5,129.02

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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.