Home / 21,212.56-29,242.92-14,905.36

Finding the Fourth Proportional to 21,212.56, 29,242.92 and 14,905.36

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Solution

The fourth proportional to 21,212.56, 29,242.92 and 14,905.36 is: 20,548.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,212.56 : 29,242.92 = 14,905.36 : x
  2. Step 2: Convert to fraction form
    21,212.56/29,242.92 = 14,905.36/x
  3. Step 3: Cross multiply
    21,212.56x = 29,242.92 × 14,905.36
  4. Step 4: Simplify right side
    21,212.56x = 435,876,250.05
  5. Step 5: Solve for x
    x = 435,876,250.05/21,212.56
  6. Step 6: Final answer
    x = 20,548.03

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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.