Home / 20,729.70-31,099.32-5,938.74

Finding the Fourth Proportional to 20,729.70, 31,099.32 and 5,938.74

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Solution

The fourth proportional to 20,729.70, 31,099.32 and 5,938.74 is: 8,909.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,729.70 : 31,099.32 = 5,938.74 : x
  2. Step 2: Convert to fraction form
    20,729.70/31,099.32 = 5,938.74/x
  3. Step 3: Cross multiply
    20,729.70x = 31,099.32 × 5,938.74
  4. Step 4: Simplify right side
    20,729.70x = 184,690,775.66
  5. Step 5: Solve for x
    x = 184,690,775.66/20,729.70
  6. Step 6: Final answer
    x = 8,909.48

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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.