Home / 13,188.87-18,202.32-7,525.62

Finding the Fourth Proportional to 13,188.87, 18,202.32 and 7,525.62

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Solution

The fourth proportional to 13,188.87, 18,202.32 and 7,525.62 is: 10,386.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,188.87 : 18,202.32 = 7,525.62 : x
  2. Step 2: Convert to fraction form
    13,188.87/18,202.32 = 7,525.62/x
  3. Step 3: Cross multiply
    13,188.87x = 18,202.32 × 7,525.62
  4. Step 4: Simplify right side
    13,188.87x = 136,983,743.44
  5. Step 5: Solve for x
    x = 136,983,743.44/13,188.87
  6. Step 6: Final answer
    x = 10,386.31

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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.