Home / 21,322.37-31,969.87-8,851.01

Finding the Fourth Proportional to 21,322.37, 31,969.87 and 8,851.01

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Solution

The fourth proportional to 21,322.37, 31,969.87 and 8,851.01 is: 13,270.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,322.37 : 31,969.87 = 8,851.01 : x
  2. Step 2: Convert to fraction form
    21,322.37/31,969.87 = 8,851.01/x
  3. Step 3: Cross multiply
    21,322.37x = 31,969.87 × 8,851.01
  4. Step 4: Simplify right side
    21,322.37x = 282,965,457.09
  5. Step 5: Solve for x
    x = 282,965,457.09/21,322.37
  6. Step 6: Final answer
    x = 13,270.82

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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.