Home / 18,564.39-27,781.52-13,305.20

Finding the Fourth Proportional to 18,564.39, 27,781.52 and 13,305.20

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Solution

The fourth proportional to 18,564.39, 27,781.52 and 13,305.20 is: 19,911.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,564.39 : 27,781.52 = 13,305.20 : x
  2. Step 2: Convert to fraction form
    18,564.39/27,781.52 = 13,305.20/x
  3. Step 3: Cross multiply
    18,564.39x = 27,781.52 × 13,305.20
  4. Step 4: Simplify right side
    18,564.39x = 369,638,474.47
  5. Step 5: Solve for x
    x = 369,638,474.47/18,564.39
  6. Step 6: Final answer
    x = 19,911.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.