Home / 12,660.91-18,985.89-4,341.75

Finding the Fourth Proportional to 12,660.91, 18,985.89 and 4,341.75

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Solution

The fourth proportional to 12,660.91, 18,985.89 and 4,341.75 is: 6,510.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,660.91 : 18,985.89 = 4,341.75 : x
  2. Step 2: Convert to fraction form
    12,660.91/18,985.89 = 4,341.75/x
  3. Step 3: Cross multiply
    12,660.91x = 18,985.89 × 4,341.75
  4. Step 4: Simplify right side
    12,660.91x = 82,431,987.91
  5. Step 5: Solve for x
    x = 82,431,987.91/12,660.91
  6. Step 6: Final answer
    x = 6,510.75

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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.