Home / 18,905.74-28,356.44-5,055.82

Finding the Fourth Proportional to 18,905.74, 28,356.44 and 5,055.82

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Solution

The fourth proportional to 18,905.74, 28,356.44 and 5,055.82 is: 7,583.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,905.74 : 28,356.44 = 5,055.82 : x
  2. Step 2: Convert to fraction form
    18,905.74/28,356.44 = 5,055.82/x
  3. Step 3: Cross multiply
    18,905.74x = 28,356.44 × 5,055.82
  4. Step 4: Simplify right side
    18,905.74x = 143,365,056.48
  5. Step 5: Solve for x
    x = 143,365,056.48/18,905.74
  6. Step 6: Final answer
    x = 7,583.15

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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.