Home / 10,908.60-16,362.90-7,999.80

Finding the Fourth Proportional to 10,908.60, 16,362.90 and 7,999.80

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Solution

The fourth proportional to 10,908.60, 16,362.90 and 7,999.80 is: 11,999.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,908.60 : 16,362.90 = 7,999.80 : x
  2. Step 2: Convert to fraction form
    10,908.60/16,362.90 = 7,999.80/x
  3. Step 3: Cross multiply
    10,908.60x = 16,362.90 × 7,999.80
  4. Step 4: Simplify right side
    10,908.60x = 130,899,927.42
  5. Step 5: Solve for x
    x = 130,899,927.42/10,908.60
  6. Step 6: Final answer
    x = 11,999.70

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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.