Home / 20,157.22-30,235.98-11,390.09

Finding the Fourth Proportional to 20,157.22, 30,235.98 and 11,390.09

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Solution

The fourth proportional to 20,157.22, 30,235.98 and 11,390.09 is: 17,085.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,157.22 : 30,235.98 = 11,390.09 : x
  2. Step 2: Convert to fraction form
    20,157.22/30,235.98 = 11,390.09/x
  3. Step 3: Cross multiply
    20,157.22x = 30,235.98 × 11,390.09
  4. Step 4: Simplify right side
    20,157.22x = 344,390,424.97
  5. Step 5: Solve for x
    x = 344,390,424.97/20,157.22
  6. Step 6: Final answer
    x = 17,085.21

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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.