Home / 20,455,318.90-28,227,904.95-11,162,580.94

Finding the Fourth Proportional to 20,455,318.90, 28,227,904.95 and 11,162,580.94

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Solution

The fourth proportional to 20,455,318.90, 28,227,904.95 and 11,162,580.94 is: 15,404,124.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,455,318.90 : 28,227,904.95 = 11,162,580.94 : x
  2. Step 2: Convert to fraction form
    20,455,318.90/28,227,904.95 = 11,162,580.94/x
  3. Step 3: Cross multiply
    20,455,318.90x = 28,227,904.95 × 11,162,580.94
  4. Step 4: Simplify right side
    20,455,318.90x = 315,096,273,771,001.62
  5. Step 5: Solve for x
    x = 315,096,273,771,001.62/20,455,318.90
  6. Step 6: Final answer
    x = 15,404,124.24

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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.