Home / 20,157.47-30,228.42-6,645.39

Finding the Fourth Proportional to 20,157.47, 30,228.42 and 6,645.39

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Solution

The fourth proportional to 20,157.47, 30,228.42 and 6,645.39 is: 9,965.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,157.47 : 30,228.42 = 6,645.39 : x
  2. Step 2: Convert to fraction form
    20,157.47/30,228.42 = 6,645.39/x
  3. Step 3: Cross multiply
    20,157.47x = 30,228.42 × 6,645.39
  4. Step 4: Simplify right side
    20,157.47x = 200,879,639.98
  5. Step 5: Solve for x
    x = 200,879,639.98/20,157.47
  6. Step 6: Final answer
    x = 9,965.52

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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.