Home / 21,239.53-29,310.27-12,286.84

Finding the Fourth Proportional to 21,239.53, 29,310.27 and 12,286.84

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Solution

The fourth proportional to 21,239.53, 29,310.27 and 12,286.84 is: 16,955.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,239.53 : 29,310.27 = 12,286.84 : x
  2. Step 2: Convert to fraction form
    21,239.53/29,310.27 = 12,286.84/x
  3. Step 3: Cross multiply
    21,239.53x = 29,310.27 × 12,286.84
  4. Step 4: Simplify right side
    21,239.53x = 360,130,597.85
  5. Step 5: Solve for x
    x = 360,130,597.85/21,239.53
  6. Step 6: Final answer
    x = 16,955.68

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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.