Home / 18,969.91-28,451.66-6,959.59

Finding the Fourth Proportional to 18,969.91, 28,451.66 and 6,959.59

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Solution

The fourth proportional to 18,969.91, 28,451.66 and 6,959.59 is: 10,438.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,969.91 : 28,451.66 = 6,959.59 : x
  2. Step 2: Convert to fraction form
    18,969.91/28,451.66 = 6,959.59/x
  3. Step 3: Cross multiply
    18,969.91x = 28,451.66 × 6,959.59
  4. Step 4: Simplify right side
    18,969.91x = 198,011,888.42
  5. Step 5: Solve for x
    x = 198,011,888.42/18,969.91
  6. Step 6: Final answer
    x = 10,438.21

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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.