Home / 19,306.09-28,959.15-7,619

Finding the Fourth Proportional to 19,306.09, 28,959.15 and 7,619

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Solution

The fourth proportional to 19,306.09, 28,959.15 and 7,619 is: 11,428.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,306.09 : 28,959.15 = 7,619 : x
  2. Step 2: Convert to fraction form
    19,306.09/28,959.15 = 7,619/x
  3. Step 3: Cross multiply
    19,306.09x = 28,959.15 × 7,619
  4. Step 4: Simplify right side
    19,306.09x = 220,639,763.85
  5. Step 5: Solve for x
    x = 220,639,763.85/19,306.09
  6. Step 6: Final answer
    x = 11,428.51

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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.