Home / 13,137.83-18,130.26-7,169.62

Finding the Fourth Proportional to 13,137.83, 18,130.26 and 7,169.62

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Solution

The fourth proportional to 13,137.83, 18,130.26 and 7,169.62 is: 9,894.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,137.83 : 18,130.26 = 7,169.62 : x
  2. Step 2: Convert to fraction form
    13,137.83/18,130.26 = 7,169.62/x
  3. Step 3: Cross multiply
    13,137.83x = 18,130.26 × 7,169.62
  4. Step 4: Simplify right side
    13,137.83x = 129,987,078.92
  5. Step 5: Solve for x
    x = 129,987,078.92/13,137.83
  6. Step 6: Final answer
    x = 9,894.11

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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.