Home / 18,419.40-27,639.82-7,744.98

Finding the Fourth Proportional to 18,419.40, 27,639.82 and 7,744.98

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Solution

The fourth proportional to 18,419.40, 27,639.82 and 7,744.98 is: 11,621.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,419.40 : 27,639.82 = 7,744.98 : x
  2. Step 2: Convert to fraction form
    18,419.40/27,639.82 = 7,744.98/x
  3. Step 3: Cross multiply
    18,419.40x = 27,639.82 × 7,744.98
  4. Step 4: Simplify right side
    18,419.40x = 214,069,963.99
  5. Step 5: Solve for x
    x = 214,069,963.99/18,419.40
  6. Step 6: Final answer
    x = 11,621.98

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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.