Home / 20,882,909.40-31,315,032.90-8,099,165.40

Finding the Fourth Proportional to 20,882,909.40, 31,315,032.90 and 8,099,165.40

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Solution

The fourth proportional to 20,882,909.40, 31,315,032.90 and 8,099,165.40 is: 12,145,129.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,882,909.40 : 31,315,032.90 = 8,099,165.40 : x
  2. Step 2: Convert to fraction form
    20,882,909.40/31,315,032.90 = 8,099,165.40/x
  3. Step 3: Cross multiply
    20,882,909.40x = 31,315,032.90 × 8,099,165.40
  4. Step 4: Simplify right side
    20,882,909.40x = 253,625,630,963,541.66
  5. Step 5: Solve for x
    x = 253,625,630,963,541.66/20,882,909.40
  6. Step 6: Final answer
    x = 12,145,129.12

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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.