Home / 21,269.48-31,908.84-6,478.01

Finding the Fourth Proportional to 21,269.48, 31,908.84 and 6,478.01

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Solution

The fourth proportional to 21,269.48, 31,908.84 and 6,478.01 is: 9,718.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,269.48 : 31,908.84 = 6,478.01 : x
  2. Step 2: Convert to fraction form
    21,269.48/31,908.84 = 6,478.01/x
  3. Step 3: Cross multiply
    21,269.48x = 31,908.84 × 6,478.01
  4. Step 4: Simplify right side
    21,269.48x = 206,705,840.09
  5. Step 5: Solve for x
    x = 206,705,840.09/21,269.48
  6. Step 6: Final answer
    x = 9,718.42

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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.