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Finding the Fourth Proportional to 10,321,772.80, 15,463,996.80 and 8,828,780.80

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Solution

The fourth proportional to 10,321,772.80, 15,463,996.80 and 8,828,780.80 is: 13,227,208.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,321,772.80 : 15,463,996.80 = 8,828,780.80 : x
  2. Step 2: Convert to fraction form
    10,321,772.80/15,463,996.80 = 8,828,780.80/x
  3. Step 3: Cross multiply
    10,321,772.80x = 15,463,996.80 × 8,828,780.80
  4. Step 4: Simplify right side
    10,321,772.80x = 136,528,238,039,101.45
  5. Step 5: Solve for x
    x = 136,528,238,039,101.45/10,321,772.80
  6. Step 6: Final answer
    x = 13,227,208.22

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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.