Home / 20,639.05-30,958.59-19,587.25

Finding the Fourth Proportional to 20,639.05, 30,958.59 and 19,587.25

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Solution

The fourth proportional to 20,639.05, 30,958.59 and 19,587.25 is: 29,380.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,639.05 : 30,958.59 = 19,587.25 : x
  2. Step 2: Convert to fraction form
    20,639.05/30,958.59 = 19,587.25/x
  3. Step 3: Cross multiply
    20,639.05x = 30,958.59 × 19,587.25
  4. Step 4: Simplify right side
    20,639.05x = 606,393,641.98
  5. Step 5: Solve for x
    x = 606,393,641.98/20,639.05
  6. Step 6: Final answer
    x = 29,380.89

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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.