Home / 18,926.46-28,390.91-6,443.01

Finding the Fourth Proportional to 18,926.46, 28,390.91 and 6,443.01

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Solution

The fourth proportional to 18,926.46, 28,390.91 and 6,443.01 is: 9,664.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,926.46 : 28,390.91 = 6,443.01 : x
  2. Step 2: Convert to fraction form
    18,926.46/28,390.91 = 6,443.01/x
  3. Step 3: Cross multiply
    18,926.46x = 28,390.91 × 6,443.01
  4. Step 4: Simplify right side
    18,926.46x = 182,922,884.82
  5. Step 5: Solve for x
    x = 182,922,884.82/18,926.46
  6. Step 6: Final answer
    x = 9,664.93

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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.