Home / 20,825.56-31,216.10-9,719.32

Finding the Fourth Proportional to 20,825.56, 31,216.10 and 9,719.32

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Solution

The fourth proportional to 20,825.56, 31,216.10 and 9,719.32 is: 14,568.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,825.56 : 31,216.10 = 9,719.32 : x
  2. Step 2: Convert to fraction form
    20,825.56/31,216.10 = 9,719.32/x
  3. Step 3: Cross multiply
    20,825.56x = 31,216.10 × 9,719.32
  4. Step 4: Simplify right side
    20,825.56x = 303,399,265.05
  5. Step 5: Solve for x
    x = 303,399,265.05/20,825.56
  6. Step 6: Final answer
    x = 14,568.60

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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.