Home / 21,168,052.60-31,752,078.90-18,144,743.80

Finding the Fourth Proportional to 21,168,052.60, 31,752,078.90 and 18,144,743.80

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Solution

The fourth proportional to 21,168,052.60, 31,752,078.90 and 18,144,743.80 is: 27,217,115.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,168,052.60 : 31,752,078.90 = 18,144,743.80 : x
  2. Step 2: Convert to fraction form
    21,168,052.60/31,752,078.90 = 18,144,743.80/x
  3. Step 3: Cross multiply
    21,168,052.60x = 31,752,078.90 × 18,144,743.80
  4. Step 4: Simplify right side
    21,168,052.60x = 576,133,336,757,885.88
  5. Step 5: Solve for x
    x = 576,133,336,757,885.88/21,168,052.60
  6. Step 6: Final answer
    x = 27,217,115.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.