Home / 21,173.58-31,759.47-7,132.68

Finding the Fourth Proportional to 21,173.58, 31,759.47 and 7,132.68

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Solution

The fourth proportional to 21,173.58, 31,759.47 and 7,132.68 is: 10,698.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,173.58 : 31,759.47 = 7,132.68 : x
  2. Step 2: Convert to fraction form
    21,173.58/31,759.47 = 7,132.68/x
  3. Step 3: Cross multiply
    21,173.58x = 31,759.47 × 7,132.68
  4. Step 4: Simplify right side
    21,173.58x = 226,530,136.48
  5. Step 5: Solve for x
    x = 226,530,136.48/21,173.58
  6. Step 6: Final answer
    x = 10,698.72

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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.