Home / 21,322.54-31,983.56-9,635.76

Finding the Fourth Proportional to 21,322.54, 31,983.56 and 9,635.76

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Solution

The fourth proportional to 21,322.54, 31,983.56 and 9,635.76 is: 14,453.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,322.54 : 31,983.56 = 9,635.76 : x
  2. Step 2: Convert to fraction form
    21,322.54/31,983.56 = 9,635.76/x
  3. Step 3: Cross multiply
    21,322.54x = 31,983.56 × 9,635.76
  4. Step 4: Simplify right side
    21,322.54x = 308,185,896.06
  5. Step 5: Solve for x
    x = 308,185,896.06/21,322.54
  6. Step 6: Final answer
    x = 14,453.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.