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Finding the Fourth Proportional to 18,448,501.20, 27,672,751.80 and 14,143,829.10

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Solution

The fourth proportional to 18,448,501.20, 27,672,751.80 and 14,143,829.10 is: 21,215,743.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,448,501.20 : 27,672,751.80 = 14,143,829.10 : x
  2. Step 2: Convert to fraction form
    18,448,501.20/27,672,751.80 = 14,143,829.10/x
  3. Step 3: Cross multiply
    18,448,501.20x = 27,672,751.80 × 14,143,829.10
  4. Step 4: Simplify right side
    18,448,501.20x = 391,398,672,185,917.38
  5. Step 5: Solve for x
    x = 391,398,672,185,917.38/18,448,501.20
  6. Step 6: Final answer
    x = 21,215,743.65

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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.