Home / 21,848.88-30,151.39-12,419.26

Finding the Fourth Proportional to 21,848.88, 30,151.39 and 12,419.26

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Solution

The fourth proportional to 21,848.88, 30,151.39 and 12,419.26 is: 17,138.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,848.88 : 30,151.39 = 12,419.26 : x
  2. Step 2: Convert to fraction form
    21,848.88/30,151.39 = 12,419.26/x
  3. Step 3: Cross multiply
    21,848.88x = 30,151.39 × 12,419.26
  4. Step 4: Simplify right side
    21,848.88x = 374,457,951.77
  5. Step 5: Solve for x
    x = 374,457,951.77/21,848.88
  6. Step 6: Final answer
    x = 17,138.54

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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.