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Finding the Fourth Proportional to 18,686,321.10, 27,976,337.55 and 18,686,321.10

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Solution

The fourth proportional to 18,686,321.10, 27,976,337.55 and 18,686,321.10 is: 27,976,337.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,686,321.10 : 27,976,337.55 = 18,686,321.10 : x
  2. Step 2: Convert to fraction form
    18,686,321.10/27,976,337.55 = 18,686,321.10/x
  3. Step 3: Cross multiply
    18,686,321.10x = 27,976,337.55 × 18,686,321.10
  4. Step 4: Simplify right side
    18,686,321.10x = 522,774,826,661,287.38
  5. Step 5: Solve for x
    x = 522,774,826,661,287.38/18,686,321.10
  6. Step 6: Final answer
    x = 27,976,337.55

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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.