Home / 20,762,639.80-31,138,430.10-6,385,679.80

Finding the Fourth Proportional to 20,762,639.80, 31,138,430.10 and 6,385,679.80

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Solution

The fourth proportional to 20,762,639.80, 31,138,430.10 and 6,385,679.80 is: 9,576,819.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,762,639.80 : 31,138,430.10 = 6,385,679.80 : x
  2. Step 2: Convert to fraction form
    20,762,639.80/31,138,430.10 = 6,385,679.80/x
  3. Step 3: Cross multiply
    20,762,639.80x = 31,138,430.10 × 6,385,679.80
  4. Step 4: Simplify right side
    20,762,639.80x = 198,840,044,093,281.97
  5. Step 5: Solve for x
    x = 198,840,044,093,281.97/20,762,639.80
  6. Step 6: Final answer
    x = 9,576,819.04

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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.