Home / 21,042.19-29,039.34-12,090.27

Finding the Fourth Proportional to 21,042.19, 29,039.34 and 12,090.27

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Solution

The fourth proportional to 21,042.19, 29,039.34 and 12,090.27 is: 16,685.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,042.19 : 29,039.34 = 12,090.27 : x
  2. Step 2: Convert to fraction form
    21,042.19/29,039.34 = 12,090.27/x
  3. Step 3: Cross multiply
    21,042.19x = 29,039.34 × 12,090.27
  4. Step 4: Simplify right side
    21,042.19x = 351,093,461.22
  5. Step 5: Solve for x
    x = 351,093,461.22/21,042.19
  6. Step 6: Final answer
    x = 16,685.21

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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.