Home / 12,120.70-16,734.85-9,283.06

Finding the Fourth Proportional to 12,120.70, 16,734.85 and 9,283.06

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Solution

The fourth proportional to 12,120.70, 16,734.85 and 9,283.06 is: 12,816.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,120.70 : 16,734.85 = 9,283.06 : x
  2. Step 2: Convert to fraction form
    12,120.70/16,734.85 = 9,283.06/x
  3. Step 3: Cross multiply
    12,120.70x = 16,734.85 × 9,283.06
  4. Step 4: Simplify right side
    12,120.70x = 155,350,616.64
  5. Step 5: Solve for x
    x = 155,350,616.64/12,120.70
  6. Step 6: Final answer
    x = 12,816.97

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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.