Home / 18,722,669.60-28,084,004.40-10,660,512.80

Finding the Fourth Proportional to 18,722,669.60, 28,084,004.40 and 10,660,512.80

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Solution

The fourth proportional to 18,722,669.60, 28,084,004.40 and 10,660,512.80 is: 15,990,769.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,722,669.60 : 28,084,004.40 = 10,660,512.80 : x
  2. Step 2: Convert to fraction form
    18,722,669.60/28,084,004.40 = 10,660,512.80/x
  3. Step 3: Cross multiply
    18,722,669.60x = 28,084,004.40 × 10,660,512.80
  4. Step 4: Simplify right side
    18,722,669.60x = 299,389,888,381,456.31
  5. Step 5: Solve for x
    x = 299,389,888,381,456.31/18,722,669.60
  6. Step 6: Final answer
    x = 15,990,769.20

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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.