Home / 20,740,535.48-28,617,665.76-11,918,282.72

Finding the Fourth Proportional to 20,740,535.48, 28,617,665.76 and 11,918,282.72

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Solution

The fourth proportional to 20,740,535.48, 28,617,665.76 and 11,918,282.72 is: 16,444,774.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,740,535.48 : 28,617,665.76 = 11,918,282.72 : x
  2. Step 2: Convert to fraction form
    20,740,535.48/28,617,665.76 = 11,918,282.72/x
  3. Step 3: Cross multiply
    20,740,535.48x = 28,617,665.76 × 11,918,282.72
  4. Step 4: Simplify right side
    20,740,535.48x = 341,073,431,314,143.69
  5. Step 5: Solve for x
    x = 341,073,431,314,143.69/20,740,535.48
  6. Step 6: Final answer
    x = 16,444,774.61

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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.