Home / 20,754.21-31,150.77-9,668.55

Finding the Fourth Proportional to 20,754.21, 31,150.77 and 9,668.55

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Solution

The fourth proportional to 20,754.21, 31,150.77 and 9,668.55 is: 14,511.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,754.21 : 31,150.77 = 9,668.55 : x
  2. Step 2: Convert to fraction form
    20,754.21/31,150.77 = 9,668.55/x
  3. Step 3: Cross multiply
    20,754.21x = 31,150.77 × 9,668.55
  4. Step 4: Simplify right side
    20,754.21x = 301,182,777.28
  5. Step 5: Solve for x
    x = 301,182,777.28/20,754.21
  6. Step 6: Final answer
    x = 14,511.89

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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.