Home / 18,901,816.40-28,334,062.20-9,309,342.80

Finding the Fourth Proportional to 18,901,816.40, 28,334,062.20 and 9,309,342.80

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Solution

The fourth proportional to 18,901,816.40, 28,334,062.20 and 9,309,342.80 is: 13,954,822.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,901,816.40 : 28,334,062.20 = 9,309,342.80 : x
  2. Step 2: Convert to fraction form
    18,901,816.40/28,334,062.20 = 9,309,342.80/x
  3. Step 3: Cross multiply
    18,901,816.40x = 28,334,062.20 × 9,309,342.80
  4. Step 4: Simplify right side
    18,901,816.40x = 263,771,497,936,322.19
  5. Step 5: Solve for x
    x = 263,771,497,936,322.19/18,901,816.40
  6. Step 6: Final answer
    x = 13,954,822.77

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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.