Home / 11,972.72-16,531.08-8,621.84

Finding the Fourth Proportional to 11,972.72, 16,531.08 and 8,621.84

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Solution

The fourth proportional to 11,972.72, 16,531.08 and 8,621.84 is: 11,904.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,972.72 : 16,531.08 = 8,621.84 : x
  2. Step 2: Convert to fraction form
    11,972.72/16,531.08 = 8,621.84/x
  3. Step 3: Cross multiply
    11,972.72x = 16,531.08 × 8,621.84
  4. Step 4: Simplify right side
    11,972.72x = 142,528,326.79
  5. Step 5: Solve for x
    x = 142,528,326.79/11,972.72
  6. Step 6: Final answer
    x = 11,904.42

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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.