Home / 20,238.42-30,357.90-7,759.08

Finding the Fourth Proportional to 20,238.42, 30,357.90 and 7,759.08

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Solution

The fourth proportional to 20,238.42, 30,357.90 and 7,759.08 is: 11,638.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,238.42 : 30,357.90 = 7,759.08 : x
  2. Step 2: Convert to fraction form
    20,238.42/30,357.90 = 7,759.08/x
  3. Step 3: Cross multiply
    20,238.42x = 30,357.90 × 7,759.08
  4. Step 4: Simplify right side
    20,238.42x = 235,549,374.73
  5. Step 5: Solve for x
    x = 235,549,374.73/20,238.42
  6. Step 6: Final answer
    x = 11,638.72

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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.