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Finding the Fourth Proportional to 18,387,064.80, 27,538,606.80 and 10,828,792.80

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Solution

The fourth proportional to 18,387,064.80, 27,538,606.80 and 10,828,792.80 is: 16,218,459.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,387,064.80 : 27,538,606.80 = 10,828,792.80 : x
  2. Step 2: Convert to fraction form
    18,387,064.80/27,538,606.80 = 10,828,792.80/x
  3. Step 3: Cross multiply
    18,387,064.80x = 27,538,606.80 × 10,828,792.80
  4. Step 4: Simplify right side
    18,387,064.80x = 298,209,867,037,871.06
  5. Step 5: Solve for x
    x = 298,209,867,037,871.06/18,387,064.80
  6. Step 6: Final answer
    x = 16,218,459.57

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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.