Home / 21,849.58-30,154.98-12,419.56

Finding the Fourth Proportional to 21,849.58, 30,154.98 and 12,419.56

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Solution

The fourth proportional to 21,849.58, 30,154.98 and 12,419.56 is: 17,140.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,849.58 : 30,154.98 = 12,419.56 : x
  2. Step 2: Convert to fraction form
    21,849.58/30,154.98 = 12,419.56/x
  3. Step 3: Cross multiply
    21,849.58x = 30,154.98 × 12,419.56
  4. Step 4: Simplify right side
    21,849.58x = 374,511,583.41
  5. Step 5: Solve for x
    x = 374,511,583.41/21,849.58
  6. Step 6: Final answer
    x = 17,140.45

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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.