Home / 18,674.07-25,779.65-12,309.90

Finding the Fourth Proportional to 18,674.07, 25,779.65 and 12,309.90

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Solution

The fourth proportional to 18,674.07, 25,779.65 and 12,309.90 is: 16,993.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,674.07 : 25,779.65 = 12,309.90 : x
  2. Step 2: Convert to fraction form
    18,674.07/25,779.65 = 12,309.90/x
  3. Step 3: Cross multiply
    18,674.07x = 25,779.65 × 12,309.90
  4. Step 4: Simplify right side
    18,674.07x = 317,344,913.54
  5. Step 5: Solve for x
    x = 317,344,913.54/18,674.07
  6. Step 6: Final answer
    x = 16,993.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.