Home / 11,700.12-16,145.40-6,663.60

Finding the Fourth Proportional to 11,700.12, 16,145.40 and 6,663.60

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Solution

The fourth proportional to 11,700.12, 16,145.40 and 6,663.60 is: 9,195.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,700.12 : 16,145.40 = 6,663.60 : x
  2. Step 2: Convert to fraction form
    11,700.12/16,145.40 = 6,663.60/x
  3. Step 3: Cross multiply
    11,700.12x = 16,145.40 × 6,663.60
  4. Step 4: Simplify right side
    11,700.12x = 107,586,487.44
  5. Step 5: Solve for x
    x = 107,586,487.44/11,700.12
  6. Step 6: Final answer
    x = 9,195.33

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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.