Home / 20,767.14-31,135.62-8,283.42

Finding the Fourth Proportional to 20,767.14, 31,135.62 and 8,283.42

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Solution

The fourth proportional to 20,767.14, 31,135.62 and 8,283.42 is: 12,419.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,767.14 : 31,135.62 = 8,283.42 : x
  2. Step 2: Convert to fraction form
    20,767.14/31,135.62 = 8,283.42/x
  3. Step 3: Cross multiply
    20,767.14x = 31,135.62 × 8,283.42
  4. Step 4: Simplify right side
    20,767.14x = 257,909,417.42
  5. Step 5: Solve for x
    x = 257,909,417.42/20,767.14
  6. Step 6: Final answer
    x = 12,419.11

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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.