Home / 13,896.80-19,186.54-12,402.16

Finding the Fourth Proportional to 13,896.80, 19,186.54 and 12,402.16

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Solution

The fourth proportional to 13,896.80, 19,186.54 and 12,402.16 is: 17,122.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,896.80 : 19,186.54 = 12,402.16 : x
  2. Step 2: Convert to fraction form
    13,896.80/19,186.54 = 12,402.16/x
  3. Step 3: Cross multiply
    13,896.80x = 19,186.54 × 12,402.16
  4. Step 4: Simplify right side
    13,896.80x = 237,954,538.93
  5. Step 5: Solve for x
    x = 237,954,538.93/13,896.80
  6. Step 6: Final answer
    x = 17,122.97

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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.