Home / 20,895.66-31,343.01-5,313.30

Finding the Fourth Proportional to 20,895.66, 31,343.01 and 5,313.30

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Solution

The fourth proportional to 20,895.66, 31,343.01 and 5,313.30 is: 7,969.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,895.66 : 31,343.01 = 5,313.30 : x
  2. Step 2: Convert to fraction form
    20,895.66/31,343.01 = 5,313.30/x
  3. Step 3: Cross multiply
    20,895.66x = 31,343.01 × 5,313.30
  4. Step 4: Simplify right side
    20,895.66x = 166,534,815.03
  5. Step 5: Solve for x
    x = 166,534,815.03/20,895.66
  6. Step 6: Final answer
    x = 7,969.83

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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.