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Finding the Fourth Proportional to 20,080.76, 30,090.62 and 15,903.32

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Solution

The fourth proportional to 20,080.76, 30,090.62 and 15,903.32 is: 23,830.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,080.76 : 30,090.62 = 15,903.32 : x
  2. Step 2: Convert to fraction form
    20,080.76/30,090.62 = 15,903.32/x
  3. Step 3: Cross multiply
    20,080.76x = 30,090.62 × 15,903.32
  4. Step 4: Simplify right side
    20,080.76x = 478,540,648.16
  5. Step 5: Solve for x
    x = 478,540,648.16/20,080.76
  6. Step 6: Final answer
    x = 23,830.81

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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.