Home / 19,121.20-28,689.39-8,588.36

Finding the Fourth Proportional to 19,121.20, 28,689.39 and 8,588.36

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Solution

The fourth proportional to 19,121.20, 28,689.39 and 8,588.36 is: 12,885.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,121.20 : 28,689.39 = 8,588.36 : x
  2. Step 2: Convert to fraction form
    19,121.20/28,689.39 = 8,588.36/x
  3. Step 3: Cross multiply
    19,121.20x = 28,689.39 × 8,588.36
  4. Step 4: Simplify right side
    19,121.20x = 246,394,881.22
  5. Step 5: Solve for x
    x = 246,394,881.22/19,121.20
  6. Step 6: Final answer
    x = 12,885.95

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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.