Home / 18,999,040.32-28,431,288-11,813,957.76

Finding the Fourth Proportional to 18,999,040.32, 28,431,288 and 11,813,957.76

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Solution

The fourth proportional to 18,999,040.32, 28,431,288 and 11,813,957.76 is: 17,679,105.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,999,040.32 : 28,431,288 = 11,813,957.76 : x
  2. Step 2: Convert to fraction form
    18,999,040.32/28,431,288 = 11,813,957.76/x
  3. Step 3: Cross multiply
    18,999,040.32x = 28,431,288 × 11,813,957.76
  4. Step 4: Simplify right side
    18,999,040.32x = 335,886,035,494,394.88
  5. Step 5: Solve for x
    x = 335,886,035,494,394.88/18,999,040.32
  6. Step 6: Final answer
    x = 17,679,105.36

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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.