Home / 12,290.84-18,436.24-3,972.08

Finding the Fourth Proportional to 12,290.84, 18,436.24 and 3,972.08

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Solution

The fourth proportional to 12,290.84, 18,436.24 and 3,972.08 is: 5,958.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,290.84 : 18,436.24 = 3,972.08 : x
  2. Step 2: Convert to fraction form
    12,290.84/18,436.24 = 3,972.08/x
  3. Step 3: Cross multiply
    12,290.84x = 18,436.24 × 3,972.08
  4. Step 4: Simplify right side
    12,290.84x = 73,230,220.18
  5. Step 5: Solve for x
    x = 73,230,220.18/12,290.84
  6. Step 6: Final answer
    x = 5,958.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.