Home / 13,078.90-18,049.09-7,110.59

Finding the Fourth Proportional to 13,078.90, 18,049.09 and 7,110.59

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Solution

The fourth proportional to 13,078.90, 18,049.09 and 7,110.59 is: 9,812.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,078.90 : 18,049.09 = 7,110.59 : x
  2. Step 2: Convert to fraction form
    13,078.90/18,049.09 = 7,110.59/x
  3. Step 3: Cross multiply
    13,078.90x = 18,049.09 × 7,110.59
  4. Step 4: Simplify right side
    13,078.90x = 128,339,678.86
  5. Step 5: Solve for x
    x = 128,339,678.86/13,078.90
  6. Step 6: Final answer
    x = 9,812.73

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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.