Home / 18,684,013.80-28,026,020.70-11,472,162.60

Finding the Fourth Proportional to 18,684,013.80, 28,026,020.70 and 11,472,162.60

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Solution

The fourth proportional to 18,684,013.80, 28,026,020.70 and 11,472,162.60 is: 17,208,243.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,684,013.80 : 28,026,020.70 = 11,472,162.60 : x
  2. Step 2: Convert to fraction form
    18,684,013.80/28,026,020.70 = 11,472,162.60/x
  3. Step 3: Cross multiply
    18,684,013.80x = 28,026,020.70 × 11,472,162.60
  4. Step 4: Simplify right side
    18,684,013.80x = 321,519,066,501,365.81
  5. Step 5: Solve for x
    x = 321,519,066,501,365.81/18,684,013.80
  6. Step 6: Final answer
    x = 17,208,243.90

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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.