Home / 19,788.78-27,290.07-17,820.48

Finding the Fourth Proportional to 19,788.78, 27,290.07 and 17,820.48

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Solution

The fourth proportional to 19,788.78, 27,290.07 and 17,820.48 is: 24,575.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,788.78 : 27,290.07 = 17,820.48 : x
  2. Step 2: Convert to fraction form
    19,788.78/27,290.07 = 17,820.48/x
  3. Step 3: Cross multiply
    19,788.78x = 27,290.07 × 17,820.48
  4. Step 4: Simplify right side
    19,788.78x = 486,322,146.63
  5. Step 5: Solve for x
    x = 486,322,146.63/19,788.78
  6. Step 6: Final answer
    x = 24,575.65

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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.