Home / 20,750.46-31,145.13-9,664.80

Finding the Fourth Proportional to 20,750.46, 31,145.13 and 9,664.80

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Solution

The fourth proportional to 20,750.46, 31,145.13 and 9,664.80 is: 14,506.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,750.46 : 31,145.13 = 9,664.80 : x
  2. Step 2: Convert to fraction form
    20,750.46/31,145.13 = 9,664.80/x
  3. Step 3: Cross multiply
    20,750.46x = 31,145.13 × 9,664.80
  4. Step 4: Simplify right side
    20,750.46x = 301,011,452.42
  5. Step 5: Solve for x
    x = 301,011,452.42/20,750.46
  6. Step 6: Final answer
    x = 14,506.25

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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.