Home / 12,389.08-18,584.58-3,155

Finding the Fourth Proportional to 12,389.08, 18,584.58 and 3,155

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Solution

The fourth proportional to 12,389.08, 18,584.58 and 3,155 is: 4,732.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,389.08 : 18,584.58 = 3,155 : x
  2. Step 2: Convert to fraction form
    12,389.08/18,584.58 = 3,155/x
  3. Step 3: Cross multiply
    12,389.08x = 18,584.58 × 3,155
  4. Step 4: Simplify right side
    12,389.08x = 58,634,349.90
  5. Step 5: Solve for x
    x = 58,634,349.90/12,389.08
  6. Step 6: Final answer
    x = 4,732.74

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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.