Home / 20,712.96-31,069.44-5,921.76

Finding the Fourth Proportional to 20,712.96, 31,069.44 and 5,921.76

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Solution

The fourth proportional to 20,712.96, 31,069.44 and 5,921.76 is: 8,882.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,712.96 : 31,069.44 = 5,921.76 : x
  2. Step 2: Convert to fraction form
    20,712.96/31,069.44 = 5,921.76/x
  3. Step 3: Cross multiply
    20,712.96x = 31,069.44 × 5,921.76
  4. Step 4: Simplify right side
    20,712.96x = 183,985,767.01
  5. Step 5: Solve for x
    x = 183,985,767.01/20,712.96
  6. Step 6: Final answer
    x = 8,882.64

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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.