Home / 21,313.22-31,976.40-8,839.04

Finding the Fourth Proportional to 21,313.22, 31,976.40 and 8,839.04

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Solution

The fourth proportional to 21,313.22, 31,976.40 and 8,839.04 is: 13,261.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,313.22 : 31,976.40 = 8,839.04 : x
  2. Step 2: Convert to fraction form
    21,313.22/31,976.40 = 8,839.04/x
  3. Step 3: Cross multiply
    21,313.22x = 31,976.40 × 8,839.04
  4. Step 4: Simplify right side
    21,313.22x = 282,640,678.66
  5. Step 5: Solve for x
    x = 282,640,678.66/21,313.22
  6. Step 6: Final answer
    x = 13,261.28

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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.