Home / 12,590.82-18,869.81-5,187.83

Finding the Fourth Proportional to 12,590.82, 18,869.81 and 5,187.83

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Solution

The fourth proportional to 12,590.82, 18,869.81 and 5,187.83 is: 7,774.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,590.82 : 18,869.81 = 5,187.83 : x
  2. Step 2: Convert to fraction form
    12,590.82/18,869.81 = 5,187.83/x
  3. Step 3: Cross multiply
    12,590.82x = 18,869.81 × 5,187.83
  4. Step 4: Simplify right side
    12,590.82x = 97,893,246.12
  5. Step 5: Solve for x
    x = 97,893,246.12/12,590.82
  6. Step 6: Final answer
    x = 7,774.97

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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.