Home / 21,184.98-29,223.12-13,213.37

Finding the Fourth Proportional to 21,184.98, 29,223.12 and 13,213.37

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Solution

The fourth proportional to 21,184.98, 29,223.12 and 13,213.37 is: 18,226.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,184.98 : 29,223.12 = 13,213.37 : x
  2. Step 2: Convert to fraction form
    21,184.98/29,223.12 = 13,213.37/x
  3. Step 3: Cross multiply
    21,184.98x = 29,223.12 × 13,213.37
  4. Step 4: Simplify right side
    21,184.98x = 386,135,751.00
  5. Step 5: Solve for x
    x = 386,135,751.00/21,184.98
  6. Step 6: Final answer
    x = 18,226.86

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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.