Home / 21,004.80-31,496.26-9,908.50

Finding the Fourth Proportional to 21,004.80, 31,496.26 and 9,908.50

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Solution

The fourth proportional to 21,004.80, 31,496.26 and 9,908.50 is: 14,857.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,004.80 : 31,496.26 = 9,908.50 : x
  2. Step 2: Convert to fraction form
    21,004.80/31,496.26 = 9,908.50/x
  3. Step 3: Cross multiply
    21,004.80x = 31,496.26 × 9,908.50
  4. Step 4: Simplify right side
    21,004.80x = 312,080,692.21
  5. Step 5: Solve for x
    x = 312,080,692.21/21,004.80
  6. Step 6: Final answer
    x = 14,857.59

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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.