Home / 12,587.73-18,869.81-4,261.92

Finding the Fourth Proportional to 12,587.73, 18,869.81 and 4,261.92

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Solution

The fourth proportional to 12,587.73, 18,869.81 and 4,261.92 is: 6,388.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,587.73 : 18,869.81 = 4,261.92 : x
  2. Step 2: Convert to fraction form
    12,587.73/18,869.81 = 4,261.92/x
  3. Step 3: Cross multiply
    12,587.73x = 18,869.81 × 4,261.92
  4. Step 4: Simplify right side
    12,587.73x = 80,421,599.33
  5. Step 5: Solve for x
    x = 80,421,599.33/12,587.73
  6. Step 6: Final answer
    x = 6,388.89

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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.