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Finding the Fourth Proportional to 18,904.69, 28,357.03 and 5,053.69

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Solution

The fourth proportional to 18,904.69, 28,357.03 and 5,053.69 is: 7,580.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,904.69 : 28,357.03 = 5,053.69 : x
  2. Step 2: Convert to fraction form
    18,904.69/28,357.03 = 5,053.69/x
  3. Step 3: Cross multiply
    18,904.69x = 28,357.03 × 5,053.69
  4. Step 4: Simplify right side
    18,904.69x = 143,307,638.94
  5. Step 5: Solve for x
    x = 143,307,638.94/18,904.69
  6. Step 6: Final answer
    x = 7,580.53

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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.