Home / 21,240.49-31,858.67-6,449.54

Finding the Fourth Proportional to 21,240.49, 31,858.67 and 6,449.54

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Solution

The fourth proportional to 21,240.49, 31,858.67 and 6,449.54 is: 9,673.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,240.49 : 31,858.67 = 6,449.54 : x
  2. Step 2: Convert to fraction form
    21,240.49/31,858.67 = 6,449.54/x
  3. Step 3: Cross multiply
    21,240.49x = 31,858.67 × 6,449.54
  4. Step 4: Simplify right side
    21,240.49x = 205,473,623.34
  5. Step 5: Solve for x
    x = 205,473,623.34/21,240.49
  6. Step 6: Final answer
    x = 9,673.68

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1.5x scale

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.