Home / 20,711.32-31,074.56-12,926.68

Finding the Fourth Proportional to 20,711.32, 31,074.56 and 12,926.68

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Solution

The fourth proportional to 20,711.32, 31,074.56 and 12,926.68 is: 19,394.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,711.32 : 31,074.56 = 12,926.68 : x
  2. Step 2: Convert to fraction form
    20,711.32/31,074.56 = 12,926.68/x
  3. Step 3: Cross multiply
    20,711.32x = 31,074.56 × 12,926.68
  4. Step 4: Simplify right side
    20,711.32x = 401,690,893.26
  5. Step 5: Solve for x
    x = 401,690,893.26/20,711.32
  6. Step 6: Final answer
    x = 19,394.75

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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.