Home / 20,993.20-31,495.26-9,303.64

Finding the Fourth Proportional to 20,993.20, 31,495.26 and 9,303.64

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Solution

The fourth proportional to 20,993.20, 31,495.26 and 9,303.64 is: 13,957.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,993.20 : 31,495.26 = 9,303.64 : x
  2. Step 2: Convert to fraction form
    20,993.20/31,495.26 = 9,303.64/x
  3. Step 3: Cross multiply
    20,993.20x = 31,495.26 × 9,303.64
  4. Step 4: Simplify right side
    20,993.20x = 293,020,560.75
  5. Step 5: Solve for x
    x = 293,020,560.75/20,993.20
  6. Step 6: Final answer
    x = 13,957.88

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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.