Home / 13,895.80-19,185.16-12,401.16

Finding the Fourth Proportional to 13,895.80, 19,185.16 and 12,401.16

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Solution

The fourth proportional to 13,895.80, 19,185.16 and 12,401.16 is: 17,121.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,895.80 : 19,185.16 = 12,401.16 : x
  2. Step 2: Convert to fraction form
    13,895.80/19,185.16 = 12,401.16/x
  3. Step 3: Cross multiply
    13,895.80x = 19,185.16 × 12,401.16
  4. Step 4: Simplify right side
    13,895.80x = 237,918,238.79
  5. Step 5: Solve for x
    x = 237,918,238.79/13,895.80
  6. Step 6: Final answer
    x = 17,121.59

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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.