Home / 20,917.66-31,374.18-6,126.72

Finding the Fourth Proportional to 20,917.66, 31,374.18 and 6,126.72

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Solution

The fourth proportional to 20,917.66, 31,374.18 and 6,126.72 is: 9,189.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,917.66 : 31,374.18 = 6,126.72 : x
  2. Step 2: Convert to fraction form
    20,917.66/31,374.18 = 6,126.72/x
  3. Step 3: Cross multiply
    20,917.66x = 31,374.18 × 6,126.72
  4. Step 4: Simplify right side
    20,917.66x = 192,220,816.09
  5. Step 5: Solve for x
    x = 192,220,816.09/20,917.66
  6. Step 6: Final answer
    x = 9,189.40

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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.