Home / 13,200.99-18,211.28-7,608.75

Finding the Fourth Proportional to 13,200.99, 18,211.28 and 7,608.75

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Solution

The fourth proportional to 13,200.99, 18,211.28 and 7,608.75 is: 10,496.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,200.99 : 18,211.28 = 7,608.75 : x
  2. Step 2: Convert to fraction form
    13,200.99/18,211.28 = 7,608.75/x
  3. Step 3: Cross multiply
    13,200.99x = 18,211.28 × 7,608.75
  4. Step 4: Simplify right side
    13,200.99x = 138,565,038.66
  5. Step 5: Solve for x
    x = 138,565,038.66/13,200.99
  6. Step 6: Final answer
    x = 10,496.56

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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.