Home / 20,790,168.20-31,163,261.24-7,830,711.52

Finding the Fourth Proportional to 20,790,168.20, 31,163,261.24 and 7,830,711.52

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Solution

The fourth proportional to 20,790,168.20, 31,163,261.24 and 7,830,711.52 is: 11,737,784.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,790,168.20 : 31,163,261.24 = 7,830,711.52 : x
  2. Step 2: Convert to fraction form
    20,790,168.20/31,163,261.24 = 7,830,711.52/x
  3. Step 3: Cross multiply
    20,790,168.20x = 31,163,261.24 × 7,830,711.52
  4. Step 4: Simplify right side
    20,790,168.20x = 244,030,508,792,837.47
  5. Step 5: Solve for x
    x = 244,030,508,792,837.47/20,790,168.20
  6. Step 6: Final answer
    x = 11,737,784.25

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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.