Home / 21,222.64-29,287.41-13,269.47

Finding the Fourth Proportional to 21,222.64, 29,287.41 and 13,269.47

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Solution

The fourth proportional to 21,222.64, 29,287.41 and 13,269.47 is: 18,311.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,222.64 : 29,287.41 = 13,269.47 : x
  2. Step 2: Convert to fraction form
    21,222.64/29,287.41 = 13,269.47/x
  3. Step 3: Cross multiply
    21,222.64x = 29,287.41 × 13,269.47
  4. Step 4: Simplify right side
    21,222.64x = 388,628,408.37
  5. Step 5: Solve for x
    x = 388,628,408.37/21,222.64
  6. Step 6: Final answer
    x = 18,311.98

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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.