Home / 20,993,790.20-31,490,685.30-8,876,935.40

Finding the Fourth Proportional to 20,993,790.20, 31,490,685.30 and 8,876,935.40

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Solution

The fourth proportional to 20,993,790.20, 31,490,685.30 and 8,876,935.40 is: 13,315,403.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,993,790.20 : 31,490,685.30 = 8,876,935.40 : x
  2. Step 2: Convert to fraction form
    20,993,790.20/31,490,685.30 = 8,876,935.40/x
  3. Step 3: Cross multiply
    20,993,790.20x = 31,490,685.30 × 8,876,935.40
  4. Step 4: Simplify right side
    20,993,790.20x = 279,540,779,109,829.62
  5. Step 5: Solve for x
    x = 279,540,779,109,829.62/20,993,790.20
  6. Step 6: Final answer
    x = 13,315,403.10

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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.