Home / 12,538.53-18,819.45-6,619.86

Finding the Fourth Proportional to 12,538.53, 18,819.45 and 6,619.86

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Solution

The fourth proportional to 12,538.53, 18,819.45 and 6,619.86 is: 9,935.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,538.53 : 18,819.45 = 6,619.86 : x
  2. Step 2: Convert to fraction form
    12,538.53/18,819.45 = 6,619.86/x
  3. Step 3: Cross multiply
    12,538.53x = 18,819.45 × 6,619.86
  4. Step 4: Simplify right side
    12,538.53x = 124,582,124.28
  5. Step 5: Solve for x
    x = 124,582,124.28/12,538.53
  6. Step 6: Final answer
    x = 9,935.94

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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.