Home / 15,428.00-21,274.72-13,197.26

Finding the Fourth Proportional to 15,428.00, 21,274.72 and 13,197.26

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Solution

The fourth proportional to 15,428.00, 21,274.72 and 13,197.26 is: 18,198.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,428.00 : 21,274.72 = 13,197.26 : x
  2. Step 2: Convert to fraction form
    15,428.00/21,274.72 = 13,197.26/x
  3. Step 3: Cross multiply
    15,428.00x = 21,274.72 × 13,197.26
  4. Step 4: Simplify right side
    15,428.00x = 280,767,871.90
  5. Step 5: Solve for x
    x = 280,767,871.90/15,428.00
  6. Step 6: Final answer
    x = 18,198.60

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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.