Home / 20,688,506.96-28,550,137.59-11,991,724.13

Finding the Fourth Proportional to 20,688,506.96, 28,550,137.59 and 11,991,724.13

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Solution

The fourth proportional to 20,688,506.96, 28,550,137.59 and 11,991,724.13 is: 16,548,578.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,688,506.96 : 28,550,137.59 = 11,991,724.13 : x
  2. Step 2: Convert to fraction form
    20,688,506.96/28,550,137.59 = 11,991,724.13/x
  3. Step 3: Cross multiply
    20,688,506.96x = 28,550,137.59 × 11,991,724.13
  4. Step 4: Simplify right side
    20,688,506.96x = 342,365,373,710,072.38
  5. Step 5: Solve for x
    x = 342,365,373,710,072.38/20,688,506.96
  6. Step 6: Final answer
    x = 16,548,578.13

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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.