Home / 20,565.45-30,851.42-7,421.04

Finding the Fourth Proportional to 20,565.45, 30,851.42 and 7,421.04

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Solution

The fourth proportional to 20,565.45, 30,851.42 and 7,421.04 is: 11,132.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,565.45 : 30,851.42 = 7,421.04 : x
  2. Step 2: Convert to fraction form
    20,565.45/30,851.42 = 7,421.04/x
  3. Step 3: Cross multiply
    20,565.45x = 30,851.42 × 7,421.04
  4. Step 4: Simplify right side
    20,565.45x = 228,949,584.77
  5. Step 5: Solve for x
    x = 228,949,584.77/20,565.45
  6. Step 6: Final answer
    x = 11,132.73

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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.