Home / 18,928,254.40-28,355,056.80-11,332,657.60

Finding the Fourth Proportional to 18,928,254.40, 28,355,056.80 and 11,332,657.60

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Solution

The fourth proportional to 18,928,254.40, 28,355,056.80 and 11,332,657.60 is: 16,976,639.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,928,254.40 : 28,355,056.80 = 11,332,657.60 : x
  2. Step 2: Convert to fraction form
    18,928,254.40/28,355,056.80 = 11,332,657.60/x
  3. Step 3: Cross multiply
    18,928,254.40x = 28,355,056.80 × 11,332,657.60
  4. Step 4: Simplify right side
    18,928,254.40x = 321,338,149,942,951.69
  5. Step 5: Solve for x
    x = 321,338,149,942,951.69/18,928,254.40
  6. Step 6: Final answer
    x = 16,976,639.43

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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.