Home / 20,914.57-31,369.56-6,123.64

Finding the Fourth Proportional to 20,914.57, 31,369.56 and 6,123.64

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Solution

The fourth proportional to 20,914.57, 31,369.56 and 6,123.64 is: 9,184.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,914.57 : 31,369.56 = 6,123.64 : x
  2. Step 2: Convert to fraction form
    20,914.57/31,369.56 = 6,123.64/x
  3. Step 3: Cross multiply
    20,914.57x = 31,369.56 × 6,123.64
  4. Step 4: Simplify right side
    20,914.57x = 192,095,750.86
  5. Step 5: Solve for x
    x = 192,095,750.86/20,914.57
  6. Step 6: Final answer
    x = 9,184.78

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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.