Home / 17,143.40-23,680.48-13,157.66

Finding the Fourth Proportional to 17,143.40, 23,680.48 and 13,157.66

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Solution

The fourth proportional to 17,143.40, 23,680.48 and 13,157.66 is: 18,174.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,143.40 : 23,680.48 = 13,157.66 : x
  2. Step 2: Convert to fraction form
    17,143.40/23,680.48 = 13,157.66/x
  3. Step 3: Cross multiply
    17,143.40x = 23,680.48 × 13,157.66
  4. Step 4: Simplify right side
    17,143.40x = 311,579,704.48
  5. Step 5: Solve for x
    x = 311,579,704.48/17,143.40
  6. Step 6: Final answer
    x = 18,174.91

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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.