Home / 13,593.12-18,759.45-8,287.21

Finding the Fourth Proportional to 13,593.12, 18,759.45 and 8,287.21

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Solution

The fourth proportional to 13,593.12, 18,759.45 and 8,287.21 is: 11,436.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,593.12 : 18,759.45 = 8,287.21 : x
  2. Step 2: Convert to fraction form
    13,593.12/18,759.45 = 8,287.21/x
  3. Step 3: Cross multiply
    13,593.12x = 18,759.45 × 8,287.21
  4. Step 4: Simplify right side
    13,593.12x = 155,463,509.55
  5. Step 5: Solve for x
    x = 155,463,509.55/13,593.12
  6. Step 6: Final answer
    x = 11,436.93

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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.