Home / 20,811.17-31,199.65-9,712.37

Finding the Fourth Proportional to 20,811.17, 31,199.65 and 9,712.37

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Solution

The fourth proportional to 20,811.17, 31,199.65 and 9,712.37 is: 14,560.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,811.17 : 31,199.65 = 9,712.37 : x
  2. Step 2: Convert to fraction form
    20,811.17/31,199.65 = 9,712.37/x
  3. Step 3: Cross multiply
    20,811.17x = 31,199.65 × 9,712.37
  4. Step 4: Simplify right side
    20,811.17x = 303,022,544.67
  5. Step 5: Solve for x
    x = 303,022,544.67/20,811.17
  6. Step 6: Final answer
    x = 14,560.57

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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.