Home / 15,292.50-21,101.82-8,920.44

Finding the Fourth Proportional to 15,292.50, 21,101.82 and 8,920.44

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Solution

The fourth proportional to 15,292.50, 21,101.82 and 8,920.44 is: 12,309.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,292.50 : 21,101.82 = 8,920.44 : x
  2. Step 2: Convert to fraction form
    15,292.50/21,101.82 = 8,920.44/x
  3. Step 3: Cross multiply
    15,292.50x = 21,101.82 × 8,920.44
  4. Step 4: Simplify right side
    15,292.50x = 188,237,519.20
  5. Step 5: Solve for x
    x = 188,237,519.20/15,292.50
  6. Step 6: Final answer
    x = 12,309.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.