Home / 21,240.27-31,858.34-6,449.32

Finding the Fourth Proportional to 21,240.27, 31,858.34 and 6,449.32

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Solution

The fourth proportional to 21,240.27, 31,858.34 and 6,449.32 is: 9,673.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,240.27 : 31,858.34 = 6,449.32 : x
  2. Step 2: Convert to fraction form
    21,240.27/31,858.34 = 6,449.32/x
  3. Step 3: Cross multiply
    21,240.27x = 31,858.34 × 6,449.32
  4. Step 4: Simplify right side
    21,240.27x = 205,464,437.79
  5. Step 5: Solve for x
    x = 205,464,437.79/21,240.27
  6. Step 6: Final answer
    x = 9,673.34

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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.