Home / 20,915,930.90-31,373,896.35-9,578,522.90

Finding the Fourth Proportional to 20,915,930.90, 31,373,896.35 and 9,578,522.90

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Solution

The fourth proportional to 20,915,930.90, 31,373,896.35 and 9,578,522.90 is: 14,367,784.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,915,930.90 : 31,373,896.35 = 9,578,522.90 : x
  2. Step 2: Convert to fraction form
    20,915,930.90/31,373,896.35 = 9,578,522.90/x
  3. Step 3: Cross multiply
    20,915,930.90x = 31,373,896.35 × 9,578,522.90
  4. Step 4: Simplify right side
    20,915,930.90x = 300,515,584,650,701.44
  5. Step 5: Solve for x
    x = 300,515,584,650,701.44/20,915,930.90
  6. Step 6: Final answer
    x = 14,367,784.35

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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.