Home / 20,565.11-30,860.01-8,878.32

Finding the Fourth Proportional to 20,565.11, 30,860.01 and 8,878.32

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Solution

The fourth proportional to 20,565.11, 30,860.01 and 8,878.32 is: 13,322.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,565.11 : 30,860.01 = 8,878.32 : x
  2. Step 2: Convert to fraction form
    20,565.11/30,860.01 = 8,878.32/x
  3. Step 3: Cross multiply
    20,565.11x = 30,860.01 × 8,878.32
  4. Step 4: Simplify right side
    20,565.11x = 273,985,043.98
  5. Step 5: Solve for x
    x = 273,985,043.98/20,565.11
  6. Step 6: Final answer
    x = 13,322.81

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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.