Home / 15,981.20-22,053.84-8,907.92

Finding the Fourth Proportional to 15,981.20, 22,053.84 and 8,907.92

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Solution

The fourth proportional to 15,981.20, 22,053.84 and 8,907.92 is: 12,292.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,981.20 : 22,053.84 = 8,907.92 : x
  2. Step 2: Convert to fraction form
    15,981.20/22,053.84 = 8,907.92/x
  3. Step 3: Cross multiply
    15,981.20x = 22,053.84 × 8,907.92
  4. Step 4: Simplify right side
    15,981.20x = 196,453,842.41
  5. Step 5: Solve for x
    x = 196,453,842.41/15,981.20
  6. Step 6: Final answer
    x = 12,292.81

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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.