Home / 15,981.78-22,053.27-8,907.44

Finding the Fourth Proportional to 15,981.78, 22,053.27 and 8,907.44

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Solution

The fourth proportional to 15,981.78, 22,053.27 and 8,907.44 is: 12,291.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,981.78 : 22,053.27 = 8,907.44 : x
  2. Step 2: Convert to fraction form
    15,981.78/22,053.27 = 8,907.44/x
  3. Step 3: Cross multiply
    15,981.78x = 22,053.27 × 8,907.44
  4. Step 4: Simplify right side
    15,981.78x = 196,438,179.33
  5. Step 5: Solve for x
    x = 196,438,179.33/15,981.78
  6. Step 6: Final answer
    x = 12,291.38

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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.