Home / 18,902,003.80-28,353,005.70-5,438,831.80

Finding the Fourth Proportional to 18,902,003.80, 28,353,005.70 and 5,438,831.80

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Solution

The fourth proportional to 18,902,003.80, 28,353,005.70 and 5,438,831.80 is: 8,158,247.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,902,003.80 : 28,353,005.70 = 5,438,831.80 : x
  2. Step 2: Convert to fraction form
    18,902,003.80/28,353,005.70 = 5,438,831.80/x
  3. Step 3: Cross multiply
    18,902,003.80x = 28,353,005.70 × 5,438,831.80
  4. Step 4: Simplify right side
    18,902,003.80x = 154,207,229,026,741.25
  5. Step 5: Solve for x
    x = 154,207,229,026,741.25/18,902,003.80
  6. Step 6: Final answer
    x = 8,158,247.70

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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.