Home / 18,914.22-28,292.31-13,291.48

Finding the Fourth Proportional to 18,914.22, 28,292.31 and 13,291.48

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Solution

The fourth proportional to 18,914.22, 28,292.31 and 13,291.48 is: 19,881.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,914.22 : 28,292.31 = 13,291.48 : x
  2. Step 2: Convert to fraction form
    18,914.22/28,292.31 = 13,291.48/x
  3. Step 3: Cross multiply
    18,914.22x = 28,292.31 × 13,291.48
  4. Step 4: Simplify right side
    18,914.22x = 376,046,672.52
  5. Step 5: Solve for x
    x = 376,046,672.52/18,914.22
  6. Step 6: Final answer
    x = 19,881.69

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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.