Home / 21,301.12-31,957.08-6,509.44

Finding the Fourth Proportional to 21,301.12, 31,957.08 and 6,509.44

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Solution

The fourth proportional to 21,301.12, 31,957.08 and 6,509.44 is: 9,765.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,301.12 : 31,957.08 = 6,509.44 : x
  2. Step 2: Convert to fraction form
    21,301.12/31,957.08 = 6,509.44/x
  3. Step 3: Cross multiply
    21,301.12x = 31,957.08 × 6,509.44
  4. Step 4: Simplify right side
    21,301.12x = 208,022,694.84
  5. Step 5: Solve for x
    x = 208,022,694.84/21,301.12
  6. Step 6: Final answer
    x = 9,765.81

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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.