Home / 21,848.33-30,153.26-12,418.31

Finding the Fourth Proportional to 21,848.33, 30,153.26 and 12,418.31

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Solution

The fourth proportional to 21,848.33, 30,153.26 and 12,418.31 is: 17,138.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,848.33 : 30,153.26 = 12,418.31 : x
  2. Step 2: Convert to fraction form
    21,848.33/30,153.26 = 12,418.31/x
  3. Step 3: Cross multiply
    21,848.33x = 30,153.26 × 12,418.31
  4. Step 4: Simplify right side
    21,848.33x = 374,452,530.19
  5. Step 5: Solve for x
    x = 374,452,530.19/21,848.33
  6. Step 6: Final answer
    x = 17,138.73

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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.