Home / 20,919,890.60-31,373,615.10-8,133,036.20

Finding the Fourth Proportional to 20,919,890.60, 31,373,615.10 and 8,133,036.20

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Solution

The fourth proportional to 20,919,890.60, 31,373,615.10 and 8,133,036.20 is: 12,197,135.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,919,890.60 : 31,373,615.10 = 8,133,036.20 : x
  2. Step 2: Convert to fraction form
    20,919,890.60/31,373,615.10 = 8,133,036.20/x
  3. Step 3: Cross multiply
    20,919,890.60x = 31,373,615.10 × 8,133,036.20
  4. Step 4: Simplify right side
    20,919,890.60x = 255,162,747,333,166.62
  5. Step 5: Solve for x
    x = 255,162,747,333,166.62/20,919,890.60
  6. Step 6: Final answer
    x = 12,197,135.84

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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.