Home / 20,242.37-30,363.75-7,759.42

Finding the Fourth Proportional to 20,242.37, 30,363.75 and 7,759.42

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Solution

The fourth proportional to 20,242.37, 30,363.75 and 7,759.42 is: 11,639.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,242.37 : 30,363.75 = 7,759.42 : x
  2. Step 2: Convert to fraction form
    20,242.37/30,363.75 = 7,759.42/x
  3. Step 3: Cross multiply
    20,242.37x = 30,363.75 × 7,759.42
  4. Step 4: Simplify right side
    20,242.37x = 235,605,013.12
  5. Step 5: Solve for x
    x = 235,605,013.12/20,242.37
  6. Step 6: Final answer
    x = 11,639.20

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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.