Home / 20,289.53-30,434.29-13,313.68

Finding the Fourth Proportional to 20,289.53, 30,434.29 and 13,313.68

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Solution

The fourth proportional to 20,289.53, 30,434.29 and 13,313.68 is: 19,970.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,289.53 : 30,434.29 = 13,313.68 : x
  2. Step 2: Convert to fraction form
    20,289.53/30,434.29 = 13,313.68/x
  3. Step 3: Cross multiply
    20,289.53x = 30,434.29 × 13,313.68
  4. Step 4: Simplify right side
    20,289.53x = 405,192,245.92
  5. Step 5: Solve for x
    x = 405,192,245.92/20,289.53
  6. Step 6: Final answer
    x = 19,970.51

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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.