Home / 19,724.89-27,220.42-10,772.43

Finding the Fourth Proportional to 19,724.89, 27,220.42 and 10,772.43

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Solution

The fourth proportional to 19,724.89, 27,220.42 and 10,772.43 is: 14,865.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,724.89 : 27,220.42 = 10,772.43 : x
  2. Step 2: Convert to fraction form
    19,724.89/27,220.42 = 10,772.43/x
  3. Step 3: Cross multiply
    19,724.89x = 27,220.42 × 10,772.43
  4. Step 4: Simplify right side
    19,724.89x = 293,230,069.02
  5. Step 5: Solve for x
    x = 293,230,069.02/19,724.89
  6. Step 6: Final answer
    x = 14,865.99

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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.