Home / 20,091.90-30,130.86-8,242.26

Finding the Fourth Proportional to 20,091.90, 30,130.86 and 8,242.26

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Solution

The fourth proportional to 20,091.90, 30,130.86 and 8,242.26 is: 12,360.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,091.90 : 30,130.86 = 8,242.26 : x
  2. Step 2: Convert to fraction form
    20,091.90/30,130.86 = 8,242.26/x
  3. Step 3: Cross multiply
    20,091.90x = 30,130.86 × 8,242.26
  4. Step 4: Simplify right side
    20,091.90x = 248,346,382.14
  5. Step 5: Solve for x
    x = 248,346,382.14/20,091.90
  6. Step 6: Final answer
    x = 12,360.52

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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.