Home / 19,818.64-27,344.28-12,261.34

Finding the Fourth Proportional to 19,818.64, 27,344.28 and 12,261.34

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Solution

The fourth proportional to 19,818.64, 27,344.28 and 12,261.34 is: 16,917.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,818.64 : 27,344.28 = 12,261.34 : x
  2. Step 2: Convert to fraction form
    19,818.64/27,344.28 = 12,261.34/x
  3. Step 3: Cross multiply
    19,818.64x = 27,344.28 × 12,261.34
  4. Step 4: Simplify right side
    19,818.64x = 335,277,514.14
  5. Step 5: Solve for x
    x = 335,277,514.14/19,818.64
  6. Step 6: Final answer
    x = 16,917.28

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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.