Home / 11,925.40-17,872.80-6,660.40

Finding the Fourth Proportional to 11,925.40, 17,872.80 and 6,660.40

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Solution

The fourth proportional to 11,925.40, 17,872.80 and 6,660.40 is: 9,982.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,925.40 : 17,872.80 = 6,660.40 : x
  2. Step 2: Convert to fraction form
    11,925.40/17,872.80 = 6,660.40/x
  3. Step 3: Cross multiply
    11,925.40x = 17,872.80 × 6,660.40
  4. Step 4: Simplify right side
    11,925.40x = 119,039,997.12
  5. Step 5: Solve for x
    x = 119,039,997.12/11,925.40
  6. Step 6: Final answer
    x = 9,982.05

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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.