Home / 20,904.57-31,358.67-5,322.20

Finding the Fourth Proportional to 20,904.57, 31,358.67 and 5,322.20

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Solution

The fourth proportional to 20,904.57, 31,358.67 and 5,322.20 is: 7,983.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,904.57 : 31,358.67 = 5,322.20 : x
  2. Step 2: Convert to fraction form
    20,904.57/31,358.67 = 5,322.20/x
  3. Step 3: Cross multiply
    20,904.57x = 31,358.67 × 5,322.20
  4. Step 4: Simplify right side
    20,904.57x = 166,896,956.68
  5. Step 5: Solve for x
    x = 166,896,956.68/20,904.57
  6. Step 6: Final answer
    x = 7,983.75

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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.