Home / 20,729.93-31,099.32-6,690.76

Finding the Fourth Proportional to 20,729.93, 31,099.32 and 6,690.76

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Solution

The fourth proportional to 20,729.93, 31,099.32 and 6,690.76 is: 10,037.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,729.93 : 31,099.32 = 6,690.76 : x
  2. Step 2: Convert to fraction form
    20,729.93/31,099.32 = 6,690.76/x
  3. Step 3: Cross multiply
    20,729.93x = 31,099.32 × 6,690.76
  4. Step 4: Simplify right side
    20,729.93x = 208,078,086.28
  5. Step 5: Solve for x
    x = 208,078,086.28/20,729.93
  6. Step 6: Final answer
    x = 10,037.57

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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.