Home / 20,200.39-30,302.21-5,409.19

Finding the Fourth Proportional to 20,200.39, 30,302.21 and 5,409.19

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Solution

The fourth proportional to 20,200.39, 30,302.21 and 5,409.19 is: 8,114.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,200.39 : 30,302.21 = 5,409.19 : x
  2. Step 2: Convert to fraction form
    20,200.39/30,302.21 = 5,409.19/x
  3. Step 3: Cross multiply
    20,200.39x = 30,302.21 × 5,409.19
  4. Step 4: Simplify right side
    20,200.39x = 163,910,411.31
  5. Step 5: Solve for x
    x = 163,910,411.31/20,200.39
  6. Step 6: Final answer
    x = 8,114.22

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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.