Home / 20,289.96-30,420.62-7,799.46

Finding the Fourth Proportional to 20,289.96, 30,420.62 and 7,799.46

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Solution

The fourth proportional to 20,289.96, 30,420.62 and 7,799.46 is: 11,693.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,289.96 : 30,420.62 = 7,799.46 : x
  2. Step 2: Convert to fraction form
    20,289.96/30,420.62 = 7,799.46/x
  3. Step 3: Cross multiply
    20,289.96x = 30,420.62 × 7,799.46
  4. Step 4: Simplify right side
    20,289.96x = 237,264,408.87
  5. Step 5: Solve for x
    x = 237,264,408.87/20,289.96
  6. Step 6: Final answer
    x = 11,693.69

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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.