Home / 20,196.80-30,295.20-9,090.51

Finding the Fourth Proportional to 20,196.80, 30,295.20 and 9,090.51

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Solution

The fourth proportional to 20,196.80, 30,295.20 and 9,090.51 is: 13,635.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,196.80 : 30,295.20 = 9,090.51 : x
  2. Step 2: Convert to fraction form
    20,196.80/30,295.20 = 9,090.51/x
  3. Step 3: Cross multiply
    20,196.80x = 30,295.20 × 9,090.51
  4. Step 4: Simplify right side
    20,196.80x = 275,398,818.55
  5. Step 5: Solve for x
    x = 275,398,818.55/20,196.80
  6. Step 6: Final answer
    x = 13,635.77

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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.