Home / 20,985,874.05-28,960,565.03-12,167,039.18

Finding the Fourth Proportional to 20,985,874.05, 28,960,565.03 and 12,167,039.18

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Solution

The fourth proportional to 20,985,874.05, 28,960,565.03 and 12,167,039.18 is: 16,790,548.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,985,874.05 : 28,960,565.03 = 12,167,039.18 : x
  2. Step 2: Convert to fraction form
    20,985,874.05/28,960,565.03 = 12,167,039.18/x
  3. Step 3: Cross multiply
    20,985,874.05x = 28,960,565.03 × 12,167,039.18
  4. Step 4: Simplify right side
    20,985,874.05x = 352,364,329,497,766.88
  5. Step 5: Solve for x
    x = 352,364,329,497,766.88/20,985,874.05
  6. Step 6: Final answer
    x = 16,790,548.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.