Home / 20,277.60-30,409.02-7,791.18

Finding the Fourth Proportional to 20,277.60, 30,409.02 and 7,791.18

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Solution

The fourth proportional to 20,277.60, 30,409.02 and 7,791.18 is: 11,683.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,277.60 : 30,409.02 = 7,791.18 : x
  2. Step 2: Convert to fraction form
    20,277.60/30,409.02 = 7,791.18/x
  3. Step 3: Cross multiply
    20,277.60x = 30,409.02 × 7,791.18
  4. Step 4: Simplify right side
    20,277.60x = 236,922,148.44
  5. Step 5: Solve for x
    x = 236,922,148.44/20,277.60
  6. Step 6: Final answer
    x = 11,683.93

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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.