Home / 20,917.35-31,376.91-6,126.27

Finding the Fourth Proportional to 20,917.35, 31,376.91 and 6,126.27

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Solution

The fourth proportional to 20,917.35, 31,376.91 and 6,126.27 is: 9,189.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,917.35 : 31,376.91 = 6,126.27 : x
  2. Step 2: Convert to fraction form
    20,917.35/31,376.91 = 6,126.27/x
  3. Step 3: Cross multiply
    20,917.35x = 31,376.91 × 6,126.27
  4. Step 4: Simplify right side
    20,917.35x = 192,223,422.43
  5. Step 5: Solve for x
    x = 192,223,422.43/20,917.35
  6. Step 6: Final answer
    x = 9,189.66

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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.