Home / 20,331.10-30,493.51-5,541.21

Finding the Fourth Proportional to 20,331.10, 30,493.51 and 5,541.21

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Solution

The fourth proportional to 20,331.10, 30,493.51 and 5,541.21 is: 8,310.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,331.10 : 30,493.51 = 5,541.21 : x
  2. Step 2: Convert to fraction form
    20,331.10/30,493.51 = 5,541.21/x
  3. Step 3: Cross multiply
    20,331.10x = 30,493.51 × 5,541.21
  4. Step 4: Simplify right side
    20,331.10x = 168,970,762.37
  5. Step 5: Solve for x
    x = 168,970,762.37/20,331.10
  6. Step 6: Final answer
    x = 8,310.95

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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.