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Finding the Fourth Proportional to 20,090.93, 30,136.62 and 9,561.93

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Solution

The fourth proportional to 20,090.93, 30,136.62 and 9,561.93 is: 14,343.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,090.93 : 30,136.62 = 9,561.93 : x
  2. Step 2: Convert to fraction form
    20,090.93/30,136.62 = 9,561.93/x
  3. Step 3: Cross multiply
    20,090.93x = 30,136.62 × 9,561.93
  4. Step 4: Simplify right side
    20,090.93x = 288,164,250.88
  5. Step 5: Solve for x
    x = 288,164,250.88/20,090.93
  6. Step 6: Final answer
    x = 14,343.01

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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.