Home / 20,090.52-30,136.05-9,561.63

Finding the Fourth Proportional to 20,090.52, 30,136.05 and 9,561.63

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Solution

The fourth proportional to 20,090.52, 30,136.05 and 9,561.63 is: 14,342.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,090.52 : 30,136.05 = 9,561.63 : x
  2. Step 2: Convert to fraction form
    20,090.52/30,136.05 = 9,561.63/x
  3. Step 3: Cross multiply
    20,090.52x = 30,136.05 × 9,561.63
  4. Step 4: Simplify right side
    20,090.52x = 288,149,759.76
  5. Step 5: Solve for x
    x = 288,149,759.76/20,090.52
  6. Step 6: Final answer
    x = 14,342.57

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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.