Home / 18,905.58-28,356.21-5,055.66

Finding the Fourth Proportional to 18,905.58, 28,356.21 and 5,055.66

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Solution

The fourth proportional to 18,905.58, 28,356.21 and 5,055.66 is: 7,582.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,905.58 : 28,356.21 = 5,055.66 : x
  2. Step 2: Convert to fraction form
    18,905.58/28,356.21 = 5,055.66/x
  3. Step 3: Cross multiply
    18,905.58x = 28,356.21 × 5,055.66
  4. Step 4: Simplify right side
    18,905.58x = 143,359,356.65
  5. Step 5: Solve for x
    x = 143,359,356.65/18,905.58
  6. Step 6: Final answer
    x = 7,582.91

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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.