Home / 11,685.64-17,528.28-2,920.54

Finding the Fourth Proportional to 11,685.64, 17,528.28 and 2,920.54

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Solution

The fourth proportional to 11,685.64, 17,528.28 and 2,920.54 is: 4,380.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,685.64 : 17,528.28 = 2,920.54 : x
  2. Step 2: Convert to fraction form
    11,685.64/17,528.28 = 2,920.54/x
  3. Step 3: Cross multiply
    11,685.64x = 17,528.28 × 2,920.54
  4. Step 4: Simplify right side
    11,685.64x = 51,192,042.87
  5. Step 5: Solve for x
    x = 51,192,042.87/11,685.64
  6. Step 6: Final answer
    x = 4,380.77

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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.