Home / 18,728,611.49-28,073,761.86-9,489,468.71

Finding the Fourth Proportional to 18,728,611.49, 28,073,761.86 and 9,489,468.71

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Solution

The fourth proportional to 18,728,611.49, 28,073,761.86 and 9,489,468.71 is: 14,224,497.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,728,611.49 : 28,073,761.86 = 9,489,468.71 : x
  2. Step 2: Convert to fraction form
    18,728,611.49/28,073,761.86 = 9,489,468.71/x
  3. Step 3: Cross multiply
    18,728,611.49x = 28,073,761.86 × 9,489,468.71
  4. Step 4: Simplify right side
    18,728,611.49x = 266,405,084,742,461.41
  5. Step 5: Solve for x
    x = 266,405,084,742,461.41/18,728,611.49
  6. Step 6: Final answer
    x = 14,224,497.36

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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.