Home / 19,853.19-27,379.10-13,489.30

Finding the Fourth Proportional to 19,853.19, 27,379.10 and 13,489.30

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Solution

The fourth proportional to 19,853.19, 27,379.10 and 13,489.30 is: 18,602.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,853.19 : 27,379.10 = 13,489.30 : x
  2. Step 2: Convert to fraction form
    19,853.19/27,379.10 = 13,489.30/x
  3. Step 3: Cross multiply
    19,853.19x = 27,379.10 × 13,489.30
  4. Step 4: Simplify right side
    19,853.19x = 369,324,893.63
  5. Step 5: Solve for x
    x = 369,324,893.63/19,853.19
  6. Step 6: Final answer
    x = 18,602.80

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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.