Home / 15,334.37-21,161.49-8,620.28

Finding the Fourth Proportional to 15,334.37, 21,161.49 and 8,620.28

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Solution

The fourth proportional to 15,334.37, 21,161.49 and 8,620.28 is: 11,896.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,334.37 : 21,161.49 = 8,620.28 : x
  2. Step 2: Convert to fraction form
    15,334.37/21,161.49 = 8,620.28/x
  3. Step 3: Cross multiply
    15,334.37x = 21,161.49 × 8,620.28
  4. Step 4: Simplify right side
    15,334.37x = 182,417,969.02
  5. Step 5: Solve for x
    x = 182,417,969.02/15,334.37
  6. Step 6: Final answer
    x = 11,896.02

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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.