Home / 13,515.62-18,669.56-10,872.99

Finding the Fourth Proportional to 13,515.62, 18,669.56 and 10,872.99

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Solution

The fourth proportional to 13,515.62, 18,669.56 and 10,872.99 is: 15,019.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,515.62 : 18,669.56 = 10,872.99 : x
  2. Step 2: Convert to fraction form
    13,515.62/18,669.56 = 10,872.99/x
  3. Step 3: Cross multiply
    13,515.62x = 18,669.56 × 10,872.99
  4. Step 4: Simplify right side
    13,515.62x = 202,993,884.82
  5. Step 5: Solve for x
    x = 202,993,884.82/13,515.62
  6. Step 6: Final answer
    x = 15,019.21

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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.