Home / 19,803.87-29,720.79-7,331.49

Finding the Fourth Proportional to 19,803.87, 29,720.79 and 7,331.49

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Solution

The fourth proportional to 19,803.87, 29,720.79 and 7,331.49 is: 11,002.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,803.87 : 29,720.79 = 7,331.49 : x
  2. Step 2: Convert to fraction form
    19,803.87/29,720.79 = 7,331.49/x
  3. Step 3: Cross multiply
    19,803.87x = 29,720.79 × 7,331.49
  4. Step 4: Simplify right side
    19,803.87x = 217,897,674.68
  5. Step 5: Solve for x
    x = 217,897,674.68/19,803.87
  6. Step 6: Final answer
    x = 11,002.78

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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.