Home / 13,129.92-18,118.83-7,464.91

Finding the Fourth Proportional to 13,129.92, 18,118.83 and 7,464.91

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Solution

The fourth proportional to 13,129.92, 18,118.83 and 7,464.91 is: 10,301.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,129.92 : 18,118.83 = 7,464.91 : x
  2. Step 2: Convert to fraction form
    13,129.92/18,118.83 = 7,464.91/x
  3. Step 3: Cross multiply
    13,129.92x = 18,118.83 × 7,464.91
  4. Step 4: Simplify right side
    13,129.92x = 135,255,435.26
  5. Step 5: Solve for x
    x = 135,255,435.26/13,129.92
  6. Step 6: Final answer
    x = 10,301.31

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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.