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Finding the Fourth Proportional to 18,714,889.80, 28,072,334.70 and 15,975,016.20

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Solution

The fourth proportional to 18,714,889.80, 28,072,334.70 and 15,975,016.20 is: 23,962,524.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,714,889.80 : 28,072,334.70 = 15,975,016.20 : x
  2. Step 2: Convert to fraction form
    18,714,889.80/28,072,334.70 = 15,975,016.20/x
  3. Step 3: Cross multiply
    18,714,889.80x = 28,072,334.70 × 15,975,016.20
  4. Step 4: Simplify right side
    18,714,889.80x = 448,456,001,604,322.12
  5. Step 5: Solve for x
    x = 448,456,001,604,322.12/18,714,889.80
  6. Step 6: Final answer
    x = 23,962,524.30

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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.