Home / 18,751.28-28,140.75-8,890.52

Finding the Fourth Proportional to 18,751.28, 28,140.75 and 8,890.52

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Solution

The fourth proportional to 18,751.28, 28,140.75 and 8,890.52 is: 13,342.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,751.28 : 28,140.75 = 8,890.52 : x
  2. Step 2: Convert to fraction form
    18,751.28/28,140.75 = 8,890.52/x
  3. Step 3: Cross multiply
    18,751.28x = 28,140.75 × 8,890.52
  4. Step 4: Simplify right side
    18,751.28x = 250,185,900.69
  5. Step 5: Solve for x
    x = 250,185,900.69/18,751.28
  6. Step 6: Final answer
    x = 13,342.34

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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.