Home / 19,812.39-27,343.90-12,261.15

Finding the Fourth Proportional to 19,812.39, 27,343.90 and 12,261.15

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Solution

The fourth proportional to 19,812.39, 27,343.90 and 12,261.15 is: 16,922.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,812.39 : 27,343.90 = 12,261.15 : x
  2. Step 2: Convert to fraction form
    19,812.39/27,343.90 = 12,261.15/x
  3. Step 3: Cross multiply
    19,812.39x = 27,343.90 × 12,261.15
  4. Step 4: Simplify right side
    19,812.39x = 335,267,659.49
  5. Step 5: Solve for x
    x = 335,267,659.49/19,812.39
  6. Step 6: Final answer
    x = 16,922.12

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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.