Home / 20,658.96-30,990.60-13,684.32

Finding the Fourth Proportional to 20,658.96, 30,990.60 and 13,684.32

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Solution

The fourth proportional to 20,658.96, 30,990.60 and 13,684.32 is: 20,527.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,658.96 : 30,990.60 = 13,684.32 : x
  2. Step 2: Convert to fraction form
    20,658.96/30,990.60 = 13,684.32/x
  3. Step 3: Cross multiply
    20,658.96x = 30,990.60 × 13,684.32
  4. Step 4: Simplify right side
    20,658.96x = 424,085,287.39
  5. Step 5: Solve for x
    x = 424,085,287.39/20,658.96
  6. Step 6: Final answer
    x = 20,527.91

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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.