Home / 19,418.68-29,125.86-6,938.20

Finding the Fourth Proportional to 19,418.68, 29,125.86 and 6,938.20

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Solution

The fourth proportional to 19,418.68, 29,125.86 and 6,938.20 is: 10,406.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,418.68 : 29,125.86 = 6,938.20 : x
  2. Step 2: Convert to fraction form
    19,418.68/29,125.86 = 6,938.20/x
  3. Step 3: Cross multiply
    19,418.68x = 29,125.86 × 6,938.20
  4. Step 4: Simplify right side
    19,418.68x = 202,081,041.85
  5. Step 5: Solve for x
    x = 202,081,041.85/19,418.68
  6. Step 6: Final answer
    x = 10,406.53

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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.