Home / 20,888.24-31,325.06-8,405.03

Finding the Fourth Proportional to 20,888.24, 31,325.06 and 8,405.03

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Solution

The fourth proportional to 20,888.24, 31,325.06 and 8,405.03 is: 12,604.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,888.24 : 31,325.06 = 8,405.03 : x
  2. Step 2: Convert to fraction form
    20,888.24/31,325.06 = 8,405.03/x
  3. Step 3: Cross multiply
    20,888.24x = 31,325.06 × 8,405.03
  4. Step 4: Simplify right side
    20,888.24x = 263,287,912.43
  5. Step 5: Solve for x
    x = 263,287,912.43/20,888.24
  6. Step 6: Final answer
    x = 12,604.60

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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.