Home / 21,027-29,017.68-13,587.96

Finding the Fourth Proportional to 21,027, 29,017.68 and 13,587.96

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Solution

The fourth proportional to 21,027, 29,017.68 and 13,587.96 is: 18,751.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,027 : 29,017.68 = 13,587.96 : x
  2. Step 2: Convert to fraction form
    21,027/29,017.68 = 13,587.96/x
  3. Step 3: Cross multiply
    21,027x = 29,017.68 × 13,587.96
  4. Step 4: Simplify right side
    21,027x = 394,291,075.13
  5. Step 5: Solve for x
    x = 394,291,075.13/21,027
  6. Step 6: Final answer
    x = 18,751.66

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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.