Home / 12,388.12-18,568.04-4,987.86

Finding the Fourth Proportional to 12,388.12, 18,568.04 and 4,987.86

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Solution

The fourth proportional to 12,388.12, 18,568.04 and 4,987.86 is: 7,476.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,388.12 : 18,568.04 = 4,987.86 : x
  2. Step 2: Convert to fraction form
    12,388.12/18,568.04 = 4,987.86/x
  3. Step 3: Cross multiply
    12,388.12x = 18,568.04 × 4,987.86
  4. Step 4: Simplify right side
    12,388.12x = 92,614,783.99
  5. Step 5: Solve for x
    x = 92,614,783.99/12,388.12
  6. Step 6: Final answer
    x = 7,476.10

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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.