Home / 11,811.12-17,719.12-9,876.84

Finding the Fourth Proportional to 11,811.12, 17,719.12 and 9,876.84

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Solution

The fourth proportional to 11,811.12, 17,719.12 and 9,876.84 is: 14,817.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,811.12 : 17,719.12 = 9,876.84 : x
  2. Step 2: Convert to fraction form
    11,811.12/17,719.12 = 9,876.84/x
  3. Step 3: Cross multiply
    11,811.12x = 17,719.12 × 9,876.84
  4. Step 4: Simplify right side
    11,811.12x = 175,008,913.18
  5. Step 5: Solve for x
    x = 175,008,913.18/11,811.12
  6. Step 6: Final answer
    x = 14,817.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.