Home / 21,089.30-29,102.09-11,657.25

Finding the Fourth Proportional to 21,089.30, 29,102.09 and 11,657.25

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Solution

The fourth proportional to 21,089.30, 29,102.09 and 11,657.25 is: 16,086.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,089.30 : 29,102.09 = 11,657.25 : x
  2. Step 2: Convert to fraction form
    21,089.30/29,102.09 = 11,657.25/x
  3. Step 3: Cross multiply
    21,089.30x = 29,102.09 × 11,657.25
  4. Step 4: Simplify right side
    21,089.30x = 339,250,280.37
  5. Step 5: Solve for x
    x = 339,250,280.37/21,089.30
  6. Step 6: Final answer
    x = 16,086.37

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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.