Home / 15,449.90-21,324.36-8,739.41

Finding the Fourth Proportional to 15,449.90, 21,324.36 and 8,739.41

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Solution

The fourth proportional to 15,449.90, 21,324.36 and 8,739.41 is: 12,062.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,449.90 : 21,324.36 = 8,739.41 : x
  2. Step 2: Convert to fraction form
    15,449.90/21,324.36 = 8,739.41/x
  3. Step 3: Cross multiply
    15,449.90x = 21,324.36 × 8,739.41
  4. Step 4: Simplify right side
    15,449.90x = 186,362,325.03
  5. Step 5: Solve for x
    x = 186,362,325.03/15,449.90
  6. Step 6: Final answer
    x = 12,062.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.