Home / 21,553.98-29,735.07-13,165.50

Finding the Fourth Proportional to 21,553.98, 29,735.07 and 13,165.50

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Solution

The fourth proportional to 21,553.98, 29,735.07 and 13,165.50 is: 18,162.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,553.98 : 29,735.07 = 13,165.50 : x
  2. Step 2: Convert to fraction form
    21,553.98/29,735.07 = 13,165.50/x
  3. Step 3: Cross multiply
    21,553.98x = 29,735.07 × 13,165.50
  4. Step 4: Simplify right side
    21,553.98x = 391,477,064.09
  5. Step 5: Solve for x
    x = 391,477,064.09/21,553.98
  6. Step 6: Final answer
    x = 18,162.63

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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.