Home / 12,261.75-16,920.25-6,957.46

Finding the Fourth Proportional to 12,261.75, 16,920.25 and 6,957.46

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Solution

The fourth proportional to 12,261.75, 16,920.25 and 6,957.46 is: 9,600.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,261.75 : 16,920.25 = 6,957.46 : x
  2. Step 2: Convert to fraction form
    12,261.75/16,920.25 = 6,957.46/x
  3. Step 3: Cross multiply
    12,261.75x = 16,920.25 × 6,957.46
  4. Step 4: Simplify right side
    12,261.75x = 117,721,962.57
  5. Step 5: Solve for x
    x = 117,721,962.57/12,261.75
  6. Step 6: Final answer
    x = 9,600.75

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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.