Home / 19,920.67-27,513.27-13,536.60

Finding the Fourth Proportional to 19,920.67, 27,513.27 and 13,536.60

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Solution

The fourth proportional to 19,920.67, 27,513.27 and 13,536.60 is: 18,695.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,920.67 : 27,513.27 = 13,536.60 : x
  2. Step 2: Convert to fraction form
    19,920.67/27,513.27 = 13,536.60/x
  3. Step 3: Cross multiply
    19,920.67x = 27,513.27 × 13,536.60
  4. Step 4: Simplify right side
    19,920.67x = 372,436,130.68
  5. Step 5: Solve for x
    x = 372,436,130.68/19,920.67
  6. Step 6: Final answer
    x = 18,695.96

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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.