Home / 20,331.36-30,490.56-6,477.12

Finding the Fourth Proportional to 20,331.36, 30,490.56 and 6,477.12

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Solution

The fourth proportional to 20,331.36, 30,490.56 and 6,477.12 is: 9,713.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,331.36 : 30,490.56 = 6,477.12 : x
  2. Step 2: Convert to fraction form
    20,331.36/30,490.56 = 6,477.12/x
  3. Step 3: Cross multiply
    20,331.36x = 30,490.56 × 6,477.12
  4. Step 4: Simplify right side
    20,331.36x = 197,491,015.99
  5. Step 5: Solve for x
    x = 197,491,015.99/20,331.36
  6. Step 6: Final answer
    x = 9,713.62

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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.