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Finding the Fourth Proportional to 18,581,415.60, 27,818,979.30 and 18,581,415.60

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Solution

The fourth proportional to 18,581,415.60, 27,818,979.30 and 18,581,415.60 is: 27,818,979.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,581,415.60 : 27,818,979.30 = 18,581,415.60 : x
  2. Step 2: Convert to fraction form
    18,581,415.60/27,818,979.30 = 18,581,415.60/x
  3. Step 3: Cross multiply
    18,581,415.60x = 27,818,979.30 × 18,581,415.60
  4. Step 4: Simplify right side
    18,581,415.60x = 516,916,015,941,097.12
  5. Step 5: Solve for x
    x = 516,916,015,941,097.12/18,581,415.60
  6. Step 6: Final answer
    x = 27,818,979.30

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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.