Home / 18,962.12-28,433.81-5,811.32

Finding the Fourth Proportional to 18,962.12, 28,433.81 and 5,811.32

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Solution

The fourth proportional to 18,962.12, 28,433.81 and 5,811.32 is: 8,714.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,962.12 : 28,433.81 = 5,811.32 : x
  2. Step 2: Convert to fraction form
    18,962.12/28,433.81 = 5,811.32/x
  3. Step 3: Cross multiply
    18,962.12x = 28,433.81 × 5,811.32
  4. Step 4: Simplify right side
    18,962.12x = 165,237,841.09
  5. Step 5: Solve for x
    x = 165,237,841.09/18,962.12
  6. Step 6: Final answer
    x = 8,714.10

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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.