Home / 15,343.70-21,172.77-8,628.26

Finding the Fourth Proportional to 15,343.70, 21,172.77 and 8,628.26

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Solution

The fourth proportional to 15,343.70, 21,172.77 and 8,628.26 is: 11,906.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,343.70 : 21,172.77 = 8,628.26 : x
  2. Step 2: Convert to fraction form
    15,343.70/21,172.77 = 8,628.26/x
  3. Step 3: Cross multiply
    15,343.70x = 21,172.77 × 8,628.26
  4. Step 4: Simplify right side
    15,343.70x = 182,684,164.48
  5. Step 5: Solve for x
    x = 182,684,164.48/15,343.70
  6. Step 6: Final answer
    x = 11,906.14

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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.