Home / 15,981.88-22,056.09-8,909.44

Finding the Fourth Proportional to 15,981.88, 22,056.09 and 8,909.44

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Solution

The fourth proportional to 15,981.88, 22,056.09 and 8,909.44 is: 12,295.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,981.88 : 22,056.09 = 8,909.44 : x
  2. Step 2: Convert to fraction form
    15,981.88/22,056.09 = 8,909.44/x
  3. Step 3: Cross multiply
    15,981.88x = 22,056.09 × 8,909.44
  4. Step 4: Simplify right side
    15,981.88x = 196,507,410.49
  5. Step 5: Solve for x
    x = 196,507,410.49/15,981.88
  6. Step 6: Final answer
    x = 12,295.64

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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.