Home / 13,968.72-20,853.54-12,134.16

Finding the Fourth Proportional to 13,968.72, 20,853.54 and 12,134.16

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Solution

The fourth proportional to 13,968.72, 20,853.54 and 12,134.16 is: 18,114.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,968.72 : 20,853.54 = 12,134.16 : x
  2. Step 2: Convert to fraction form
    13,968.72/20,853.54 = 12,134.16/x
  3. Step 3: Cross multiply
    13,968.72x = 20,853.54 × 12,134.16
  4. Step 4: Simplify right side
    13,968.72x = 253,040,190.93
  5. Step 5: Solve for x
    x = 253,040,190.93/13,968.72
  6. Step 6: Final answer
    x = 18,114.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.