Home / 18,685,712.80-28,028,569.20-13,583,879.20

Finding the Fourth Proportional to 18,685,712.80, 28,028,569.20 and 13,583,879.20

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Solution

The fourth proportional to 18,685,712.80, 28,028,569.20 and 13,583,879.20 is: 20,375,818.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,685,712.80 : 28,028,569.20 = 13,583,879.20 : x
  2. Step 2: Convert to fraction form
    18,685,712.80/28,028,569.20 = 13,583,879.20/x
  3. Step 3: Cross multiply
    18,685,712.80x = 28,028,569.20 × 13,583,879.20
  4. Step 4: Simplify right side
    18,685,712.80x = 380,736,698,161,640.62
  5. Step 5: Solve for x
    x = 380,736,698,161,640.62/18,685,712.80
  6. Step 6: Final answer
    x = 20,375,818.80

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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.