Home / 20,762,638.80-31,138,428.60-6,385,678.80

Finding the Fourth Proportional to 20,762,638.80, 31,138,428.60 and 6,385,678.80

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Solution

The fourth proportional to 20,762,638.80, 31,138,428.60 and 6,385,678.80 is: 9,576,817.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,762,638.80 : 31,138,428.60 = 6,385,678.80 : x
  2. Step 2: Convert to fraction form
    20,762,638.80/31,138,428.60 = 6,385,678.80/x
  3. Step 3: Cross multiply
    20,762,638.80x = 31,138,428.60 × 6,385,678.80
  4. Step 4: Simplify right side
    20,762,638.80x = 198,840,003,376,333.69
  5. Step 5: Solve for x
    x = 198,840,003,376,333.69/20,762,638.80
  6. Step 6: Final answer
    x = 9,576,817.54

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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.