Home / 20,365.96-30,539.28-7,891.80

Finding the Fourth Proportional to 20,365.96, 30,539.28 and 7,891.80

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Solution

The fourth proportional to 20,365.96, 30,539.28 and 7,891.80 is: 11,833.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,365.96 : 30,539.28 = 7,891.80 : x
  2. Step 2: Convert to fraction form
    20,365.96/30,539.28 = 7,891.80/x
  3. Step 3: Cross multiply
    20,365.96x = 30,539.28 × 7,891.80
  4. Step 4: Simplify right side
    20,365.96x = 241,009,889.90
  5. Step 5: Solve for x
    x = 241,009,889.90/20,365.96
  6. Step 6: Final answer
    x = 11,833.96

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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.