Home / 21,343.98-29,469.26-13,808.54

Finding the Fourth Proportional to 21,343.98, 29,469.26 and 13,808.54

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Solution

The fourth proportional to 21,343.98, 29,469.26 and 13,808.54 is: 19,065.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,343.98 : 29,469.26 = 13,808.54 : x
  2. Step 2: Convert to fraction form
    21,343.98/29,469.26 = 13,808.54/x
  3. Step 3: Cross multiply
    21,343.98x = 29,469.26 × 13,808.54
  4. Step 4: Simplify right side
    21,343.98x = 406,927,455.48
  5. Step 5: Solve for x
    x = 406,927,455.48/21,343.98
  6. Step 6: Final answer
    x = 19,065.21

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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.