Home / 18,722,542.80-28,083,814.20-7,938,008.40

Finding the Fourth Proportional to 18,722,542.80, 28,083,814.20 and 7,938,008.40

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Solution

The fourth proportional to 18,722,542.80, 28,083,814.20 and 7,938,008.40 is: 11,907,012.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,722,542.80 : 28,083,814.20 = 7,938,008.40 : x
  2. Step 2: Convert to fraction form
    18,722,542.80/28,083,814.20 = 7,938,008.40/x
  3. Step 3: Cross multiply
    18,722,542.80x = 28,083,814.20 × 7,938,008.40
  4. Step 4: Simplify right side
    18,722,542.80x = 222,929,553,023,639.28
  5. Step 5: Solve for x
    x = 222,929,553,023,639.28/18,722,542.80
  6. Step 6: Final answer
    x = 11,907,012.60

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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.