Home / 12,364.20-17,056.80-8,122.32

Finding the Fourth Proportional to 12,364.20, 17,056.80 and 8,122.32

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Solution

The fourth proportional to 12,364.20, 17,056.80 and 8,122.32 is: 11,204.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,364.20 : 17,056.80 = 8,122.32 : x
  2. Step 2: Convert to fraction form
    12,364.20/17,056.80 = 8,122.32/x
  3. Step 3: Cross multiply
    12,364.20x = 17,056.80 × 8,122.32
  4. Step 4: Simplify right side
    12,364.20x = 138,540,787.78
  5. Step 5: Solve for x
    x = 138,540,787.78/12,364.20
  6. Step 6: Final answer
    x = 11,204.99

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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.