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Finding the Fourth Proportional to 15,980.66, 22,054.56 and 8,811.84

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Solution

The fourth proportional to 15,980.66, 22,054.56 and 8,811.84 is: 12,161.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,980.66 : 22,054.56 = 8,811.84 : x
  2. Step 2: Convert to fraction form
    15,980.66/22,054.56 = 8,811.84/x
  3. Step 3: Cross multiply
    15,980.66x = 22,054.56 × 8,811.84
  4. Step 4: Simplify right side
    15,980.66x = 194,341,253.99
  5. Step 5: Solve for x
    x = 194,341,253.99/15,980.66
  6. Step 6: Final answer
    x = 12,161.03

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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.