Home / 18,820,549.80-28,232,174.07-7,879,729.68

Finding the Fourth Proportional to 18,820,549.80, 28,232,174.07 and 7,879,729.68

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Solution

The fourth proportional to 18,820,549.80, 28,232,174.07 and 7,879,729.68 is: 11,820,159.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,820,549.80 : 28,232,174.07 = 7,879,729.68 : x
  2. Step 2: Convert to fraction form
    18,820,549.80/28,232,174.07 = 7,879,729.68/x
  3. Step 3: Cross multiply
    18,820,549.80x = 28,232,174.07 × 7,879,729.68
  4. Step 4: Simplify right side
    18,820,549.80x = 222,461,899,950,305.41
  5. Step 5: Solve for x
    x = 222,461,899,950,305.41/18,820,549.80
  6. Step 6: Final answer
    x = 11,820,159.47

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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.