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Finding the Fourth Proportional to 18,979,330.60, 28,468,995.90 and 18,097,532.20

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Solution

The fourth proportional to 18,979,330.60, 28,468,995.90 and 18,097,532.20 is: 27,146,298.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,979,330.60 : 28,468,995.90 = 18,097,532.20 : x
  2. Step 2: Convert to fraction form
    18,979,330.60/28,468,995.90 = 18,097,532.20/x
  3. Step 3: Cross multiply
    18,979,330.60x = 28,468,995.90 × 18,097,532.20
  4. Step 4: Simplify right side
    18,979,330.60x = 515,218,570,001,917.94
  5. Step 5: Solve for x
    x = 515,218,570,001,917.94/18,979,330.60
  6. Step 6: Final answer
    x = 27,146,298.30

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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.