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Finding the Fourth Proportional to 18,392,653.20, 27,588,979.80 and 10,430,029.20

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Solution

The fourth proportional to 18,392,653.20, 27,588,979.80 and 10,430,029.20 is: 15,645,043.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,392,653.20 : 27,588,979.80 = 10,430,029.20 : x
  2. Step 2: Convert to fraction form
    18,392,653.20/27,588,979.80 = 10,430,029.20/x
  3. Step 3: Cross multiply
    18,392,653.20x = 27,588,979.80 × 10,430,029.20
  4. Step 4: Simplify right side
    18,392,653.20x = 287,753,864,912,210.12
  5. Step 5: Solve for x
    x = 287,753,864,912,210.12/18,392,653.20
  6. Step 6: Final answer
    x = 15,645,043.80

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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.