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Finding the Fourth Proportional to 21,827.06, 30,114.01 and 13,326.11

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Solution

The fourth proportional to 21,827.06, 30,114.01 and 13,326.11 is: 18,385.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,827.06 : 30,114.01 = 13,326.11 : x
  2. Step 2: Convert to fraction form
    21,827.06/30,114.01 = 13,326.11/x
  3. Step 3: Cross multiply
    21,827.06x = 30,114.01 × 13,326.11
  4. Step 4: Simplify right side
    21,827.06x = 401,302,609.80
  5. Step 5: Solve for x
    x = 401,302,609.80/21,827.06
  6. Step 6: Final answer
    x = 18,385.55

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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.