Home / 15,344.30-21,172.49-8,629.40

Finding the Fourth Proportional to 15,344.30, 21,172.49 and 8,629.40

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Solution

The fourth proportional to 15,344.30, 21,172.49 and 8,629.40 is: 11,907.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,344.30 : 21,172.49 = 8,629.40 : x
  2. Step 2: Convert to fraction form
    15,344.30/21,172.49 = 8,629.40/x
  3. Step 3: Cross multiply
    15,344.30x = 21,172.49 × 8,629.40
  4. Step 4: Simplify right side
    15,344.30x = 182,705,927.35
  5. Step 5: Solve for x
    x = 182,705,927.35/15,344.30
  6. Step 6: Final answer
    x = 11,907.09

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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.