Home / 20,365,320.38-28,103,944.54-11,072,890.32

Finding the Fourth Proportional to 20,365,320.38, 28,103,944.54 and 11,072,890.32

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Solution

The fourth proportional to 20,365,320.38, 28,103,944.54 and 11,072,890.32 is: 15,280,481.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,365,320.38 : 28,103,944.54 = 11,072,890.32 : x
  2. Step 2: Convert to fraction form
    20,365,320.38/28,103,944.54 = 11,072,890.32/x
  3. Step 3: Cross multiply
    20,365,320.38x = 28,103,944.54 × 11,072,890.32
  4. Step 4: Simplify right side
    20,365,320.38x = 311,191,895,423,100.62
  5. Step 5: Solve for x
    x = 311,191,895,423,100.62/20,365,320.38
  6. Step 6: Final answer
    x = 15,280,481.21

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1.5x scale

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.