Home / 13,028.88-17,988.75-8,319.54

Finding the Fourth Proportional to 13,028.88, 17,988.75 and 8,319.54

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Solution

The fourth proportional to 13,028.88, 17,988.75 and 8,319.54 is: 11,486.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,028.88 : 17,988.75 = 8,319.54 : x
  2. Step 2: Convert to fraction form
    13,028.88/17,988.75 = 8,319.54/x
  3. Step 3: Cross multiply
    13,028.88x = 17,988.75 × 8,319.54
  4. Step 4: Simplify right side
    13,028.88x = 149,658,125.18
  5. Step 5: Solve for x
    x = 149,658,125.18/13,028.88
  6. Step 6: Final answer
    x = 11,486.65

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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.