Home / 13,119.48-18,104.91-8,585.27

Finding the Fourth Proportional to 13,119.48, 18,104.91 and 8,585.27

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Solution

The fourth proportional to 13,119.48, 18,104.91 and 8,585.27 is: 11,847.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,119.48 : 18,104.91 = 8,585.27 : x
  2. Step 2: Convert to fraction form
    13,119.48/18,104.91 = 8,585.27/x
  3. Step 3: Cross multiply
    13,119.48x = 18,104.91 × 8,585.27
  4. Step 4: Simplify right side
    13,119.48x = 155,435,535.46
  5. Step 5: Solve for x
    x = 155,435,535.46/13,119.48
  6. Step 6: Final answer
    x = 11,847.69

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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.