Home / 13,589.84-18,759.32-9,111.96

Finding the Fourth Proportional to 13,589.84, 18,759.32 and 9,111.96

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Solution

The fourth proportional to 13,589.84, 18,759.32 and 9,111.96 is: 12,578.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,589.84 : 18,759.32 = 9,111.96 : x
  2. Step 2: Convert to fraction form
    13,589.84/18,759.32 = 9,111.96/x
  3. Step 3: Cross multiply
    13,589.84x = 18,759.32 × 9,111.96
  4. Step 4: Simplify right side
    13,589.84x = 170,934,173.47
  5. Step 5: Solve for x
    x = 170,934,173.47/13,589.84
  6. Step 6: Final answer
    x = 12,578.09

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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.