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Finding the Fourth Proportional to 21,297.94, 31,955.97 and 8,827.03

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Solution

The fourth proportional to 21,297.94, 31,955.97 and 8,827.03 is: 13,244.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,297.94 : 31,955.97 = 8,827.03 : x
  2. Step 2: Convert to fraction form
    21,297.94/31,955.97 = 8,827.03/x
  3. Step 3: Cross multiply
    21,297.94x = 31,955.97 × 8,827.03
  4. Step 4: Simplify right side
    21,297.94x = 282,076,149.51
  5. Step 5: Solve for x
    x = 282,076,149.51/21,297.94
  6. Step 6: Final answer
    x = 13,244.29

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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.