Home / 20,811,972.40-28,701,438.60-17,870,789.24

Finding the Fourth Proportional to 20,811,972.40, 28,701,438.60 and 17,870,789.24

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Solution

The fourth proportional to 20,811,972.40, 28,701,438.60 and 17,870,789.24 is: 24,645,302.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,811,972.40 : 28,701,438.60 = 17,870,789.24 : x
  2. Step 2: Convert to fraction form
    20,811,972.40/28,701,438.60 = 17,870,789.24/x
  3. Step 3: Cross multiply
    20,811,972.40x = 28,701,438.60 × 17,870,789.24
  4. Step 4: Simplify right side
    20,811,972.40x = 512,917,360,105,400.62
  5. Step 5: Solve for x
    x = 512,917,360,105,400.62/20,811,972.40
  6. Step 6: Final answer
    x = 24,645,302.73

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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.