Home / 13,078.69-18,052.55-8,889.37

Finding the Fourth Proportional to 13,078.69, 18,052.55 and 8,889.37

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Solution

The fourth proportional to 13,078.69, 18,052.55 and 8,889.37 is: 12,270.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,078.69 : 18,052.55 = 8,889.37 : x
  2. Step 2: Convert to fraction form
    13,078.69/18,052.55 = 8,889.37/x
  3. Step 3: Cross multiply
    13,078.69x = 18,052.55 × 8,889.37
  4. Step 4: Simplify right side
    13,078.69x = 160,475,751.95
  5. Step 5: Solve for x
    x = 160,475,751.95/13,078.69
  6. Step 6: Final answer
    x = 12,270.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.