Home / 15,981.32-22,054.52-8,906.99

Finding the Fourth Proportional to 15,981.32, 22,054.52 and 8,906.99

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Solution

The fourth proportional to 15,981.32, 22,054.52 and 8,906.99 is: 12,291.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,981.32 : 22,054.52 = 8,906.99 : x
  2. Step 2: Convert to fraction form
    15,981.32/22,054.52 = 8,906.99/x
  3. Step 3: Cross multiply
    15,981.32x = 22,054.52 × 8,906.99
  4. Step 4: Simplify right side
    15,981.32x = 196,439,234.29
  5. Step 5: Solve for x
    x = 196,439,234.29/15,981.32
  6. Step 6: Final answer
    x = 12,291.80

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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.