Home / 19,853.56-27,379.63-13,489.68

Finding the Fourth Proportional to 19,853.56, 27,379.63 and 13,489.68

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Solution

The fourth proportional to 19,853.56, 27,379.63 and 13,489.68 is: 18,603.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,853.56 : 27,379.63 = 13,489.68 : x
  2. Step 2: Convert to fraction form
    19,853.56/27,379.63 = 13,489.68/x
  3. Step 3: Cross multiply
    19,853.56x = 27,379.63 × 13,489.68
  4. Step 4: Simplify right side
    19,853.56x = 369,342,242.87
  5. Step 5: Solve for x
    x = 369,342,242.87/19,853.56
  6. Step 6: Final answer
    x = 18,603.33

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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.