Home / 20,288.91-30,433.36-13,313.06

Finding the Fourth Proportional to 20,288.91, 30,433.36 and 13,313.06

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Solution

The fourth proportional to 20,288.91, 30,433.36 and 13,313.06 is: 19,969.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,288.91 : 30,433.36 = 13,313.06 : x
  2. Step 2: Convert to fraction form
    20,288.91/30,433.36 = 13,313.06/x
  3. Step 3: Cross multiply
    20,288.91x = 30,433.36 × 13,313.06
  4. Step 4: Simplify right side
    20,288.91x = 405,161,082.60
  5. Step 5: Solve for x
    x = 405,161,082.60/20,288.91
  6. Step 6: Final answer
    x = 19,969.59

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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.