Home / 20,716.20-31,056.93-9,020.70

Finding the Fourth Proportional to 20,716.20, 31,056.93 and 9,020.70

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Solution

The fourth proportional to 20,716.20, 31,056.93 and 9,020.70 is: 13,523.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,716.20 : 31,056.93 = 9,020.70 : x
  2. Step 2: Convert to fraction form
    20,716.20/31,056.93 = 9,020.70/x
  3. Step 3: Cross multiply
    20,716.20x = 31,056.93 × 9,020.70
  4. Step 4: Simplify right side
    20,716.20x = 280,155,248.45
  5. Step 5: Solve for x
    x = 280,155,248.45/20,716.20
  6. Step 6: Final answer
    x = 13,523.49

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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.