Home / 21,751.13-30,015.87-12,799.11

Finding the Fourth Proportional to 21,751.13, 30,015.87 and 12,799.11

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Solution

The fourth proportional to 21,751.13, 30,015.87 and 12,799.11 is: 17,662.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,751.13 : 30,015.87 = 12,799.11 : x
  2. Step 2: Convert to fraction form
    21,751.13/30,015.87 = 12,799.11/x
  3. Step 3: Cross multiply
    21,751.13x = 30,015.87 × 12,799.11
  4. Step 4: Simplify right side
    21,751.13x = 384,176,486.44
  5. Step 5: Solve for x
    x = 384,176,486.44/21,751.13
  6. Step 6: Final answer
    x = 17,662.37

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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.