Home / 20,647.28-30,964.83-5,857.49

Finding the Fourth Proportional to 20,647.28, 30,964.83 and 5,857.49

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Solution

The fourth proportional to 20,647.28, 30,964.83 and 5,857.49 is: 8,784.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,647.28 : 30,964.83 = 5,857.49 : x
  2. Step 2: Convert to fraction form
    20,647.28/30,964.83 = 5,857.49/x
  3. Step 3: Cross multiply
    20,647.28x = 30,964.83 × 5,857.49
  4. Step 4: Simplify right side
    20,647.28x = 181,376,027.25
  5. Step 5: Solve for x
    x = 181,376,027.25/20,647.28
  6. Step 6: Final answer
    x = 8,784.50

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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.