Home / 11,947.42-17,921.67-4,156.84

Finding the Fourth Proportional to 11,947.42, 17,921.67 and 4,156.84

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Solution

The fourth proportional to 11,947.42, 17,921.67 and 4,156.84 is: 6,235.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,947.42 : 17,921.67 = 4,156.84 : x
  2. Step 2: Convert to fraction form
    11,947.42/17,921.67 = 4,156.84/x
  3. Step 3: Cross multiply
    11,947.42x = 17,921.67 × 4,156.84
  4. Step 4: Simplify right side
    11,947.42x = 74,497,514.72
  5. Step 5: Solve for x
    x = 74,497,514.72/11,947.42
  6. Step 6: Final answer
    x = 6,235.45

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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.