Home / 21,230.53-29,297.80-11,670.21

Finding the Fourth Proportional to 21,230.53, 29,297.80 and 11,670.21

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Solution

The fourth proportional to 21,230.53, 29,297.80 and 11,670.21 is: 16,104.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,230.53 : 29,297.80 = 11,670.21 : x
  2. Step 2: Convert to fraction form
    21,230.53/29,297.80 = 11,670.21/x
  3. Step 3: Cross multiply
    21,230.53x = 29,297.80 × 11,670.21
  4. Step 4: Simplify right side
    21,230.53x = 341,911,478.54
  5. Step 5: Solve for x
    x = 341,911,478.54/21,230.53
  6. Step 6: Final answer
    x = 16,104.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.