Home / 12,990.68-19,478.96-6,324.92

Finding the Fourth Proportional to 12,990.68, 19,478.96 and 6,324.92

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Solution

The fourth proportional to 12,990.68, 19,478.96 and 6,324.92 is: 9,483.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,990.68 : 19,478.96 = 6,324.92 : x
  2. Step 2: Convert to fraction form
    12,990.68/19,478.96 = 6,324.92/x
  3. Step 3: Cross multiply
    12,990.68x = 19,478.96 × 6,324.92
  4. Step 4: Simplify right side
    12,990.68x = 123,202,863.68
  5. Step 5: Solve for x
    x = 123,202,863.68/12,990.68
  6. Step 6: Final answer
    x = 9,483.94

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1.5x scale

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.