Home / 20,619.21-30,880.68-15,058.78

Finding the Fourth Proportional to 20,619.21, 30,880.68 and 15,058.78

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Solution

The fourth proportional to 20,619.21, 30,880.68 and 15,058.78 is: 22,553.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,619.21 : 30,880.68 = 15,058.78 : x
  2. Step 2: Convert to fraction form
    20,619.21/30,880.68 = 15,058.78/x
  3. Step 3: Cross multiply
    20,619.21x = 30,880.68 × 15,058.78
  4. Step 4: Simplify right side
    20,619.21x = 465,025,366.37
  5. Step 5: Solve for x
    x = 465,025,366.37/20,619.21
  6. Step 6: Final answer
    x = 22,553.02

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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.