Home / 28,464.08-42,691.28-7,682.72

Finding the Fourth Proportional to 28,464.08, 42,691.28 and 7,682.72

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Solution

The fourth proportional to 28,464.08, 42,691.28 and 7,682.72 is: 11,522.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,464.08 : 42,691.28 = 7,682.72 : x
  2. Step 2: Convert to fraction form
    28,464.08/42,691.28 = 7,682.72/x
  3. Step 3: Cross multiply
    28,464.08x = 42,691.28 × 7,682.72
  4. Step 4: Simplify right side
    28,464.08x = 327,985,150.68
  5. Step 5: Solve for x
    x = 327,985,150.68/28,464.08
  6. Step 6: Final answer
    x = 11,522.77

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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.