Home / 21,076.23-29,072.34-13,520.01

Finding the Fourth Proportional to 21,076.23, 29,072.34 and 13,520.01

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Solution

The fourth proportional to 21,076.23, 29,072.34 and 13,520.01 is: 18,649.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,076.23 : 29,072.34 = 13,520.01 : x
  2. Step 2: Convert to fraction form
    21,076.23/29,072.34 = 13,520.01/x
  3. Step 3: Cross multiply
    21,076.23x = 29,072.34 × 13,520.01
  4. Step 4: Simplify right side
    21,076.23x = 393,058,327.52
  5. Step 5: Solve for x
    x = 393,058,327.52/21,076.23
  6. Step 6: Final answer
    x = 18,649.37

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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.