Home / 20,688,520.13-28,550,155.66-11,991,737.24

Finding the Fourth Proportional to 20,688,520.13, 28,550,155.66 and 11,991,737.24

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Solution

The fourth proportional to 20,688,520.13, 28,550,155.66 and 11,991,737.24 is: 16,548,596.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,688,520.13 : 28,550,155.66 = 11,991,737.24 : x
  2. Step 2: Convert to fraction form
    20,688,520.13/28,550,155.66 = 11,991,737.24/x
  3. Step 3: Cross multiply
    20,688,520.13x = 28,550,155.66 × 11,991,737.24
  4. Step 4: Simplify right side
    20,688,520.13x = 342,365,964,770,151.69
  5. Step 5: Solve for x
    x = 342,365,964,770,151.69/20,688,520.13
  6. Step 6: Final answer
    x = 16,548,596.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.