Home / 21,852.22-30,147.51-13,454.14

Finding the Fourth Proportional to 21,852.22, 30,147.51 and 13,454.14

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Solution

The fourth proportional to 21,852.22, 30,147.51 and 13,454.14 is: 18,561.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,852.22 : 30,147.51 = 13,454.14 : x
  2. Step 2: Convert to fraction form
    21,852.22/30,147.51 = 13,454.14/x
  3. Step 3: Cross multiply
    21,852.22x = 30,147.51 × 13,454.14
  4. Step 4: Simplify right side
    21,852.22x = 405,608,820.19
  5. Step 5: Solve for x
    x = 405,608,820.19/21,852.22
  6. Step 6: Final answer
    x = 18,561.45

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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.