Home / 20,974.56-31,455.06-6,931.32

Finding the Fourth Proportional to 20,974.56, 31,455.06 and 6,931.32

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Solution

The fourth proportional to 20,974.56, 31,455.06 and 6,931.32 is: 10,394.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,974.56 : 31,455.06 = 6,931.32 : x
  2. Step 2: Convert to fraction form
    20,974.56/31,455.06 = 6,931.32/x
  3. Step 3: Cross multiply
    20,974.56x = 31,455.06 × 6,931.32
  4. Step 4: Simplify right side
    20,974.56x = 218,025,086.48
  5. Step 5: Solve for x
    x = 218,025,086.48/20,974.56
  6. Step 6: Final answer
    x = 10,394.74

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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.