Home / 20,761,718.80-31,142,578.20-12,116,945.20

Finding the Fourth Proportional to 20,761,718.80, 31,142,578.20 and 12,116,945.20

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Solution

The fourth proportional to 20,761,718.80, 31,142,578.20 and 12,116,945.20 is: 18,175,417.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,761,718.80 : 31,142,578.20 = 12,116,945.20 : x
  2. Step 2: Convert to fraction form
    20,761,718.80/31,142,578.20 = 12,116,945.20/x
  3. Step 3: Cross multiply
    20,761,718.80x = 31,142,578.20 × 12,116,945.20
  4. Step 4: Simplify right side
    20,761,718.80x = 377,352,913,436,114.62
  5. Step 5: Solve for x
    x = 377,352,913,436,114.62/20,761,718.80
  6. Step 6: Final answer
    x = 18,175,417.80

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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.