Home / 18,902,187.40-28,334,618.70-9,309,713.80

Finding the Fourth Proportional to 18,902,187.40, 28,334,618.70 and 9,309,713.80

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Solution

The fourth proportional to 18,902,187.40, 28,334,618.70 and 9,309,713.80 is: 13,955,379.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,902,187.40 : 28,334,618.70 = 9,309,713.80 : x
  2. Step 2: Convert to fraction form
    18,902,187.40/28,334,618.70 = 9,309,713.80/x
  3. Step 3: Cross multiply
    18,902,187.40x = 28,334,618.70 × 9,309,713.80
  4. Step 4: Simplify right side
    18,902,187.40x = 263,787,190,729,128.06
  5. Step 5: Solve for x
    x = 263,787,190,729,128.06/18,902,187.40
  6. Step 6: Final answer
    x = 13,955,379.09

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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.