Home / 21,100.53-29,118.09-11,540.37

Finding the Fourth Proportional to 21,100.53, 29,118.09 and 11,540.37

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Solution

The fourth proportional to 21,100.53, 29,118.09 and 11,540.37 is: 15,925.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,100.53 : 29,118.09 = 11,540.37 : x
  2. Step 2: Convert to fraction form
    21,100.53/29,118.09 = 11,540.37/x
  3. Step 3: Cross multiply
    21,100.53x = 29,118.09 × 11,540.37
  4. Step 4: Simplify right side
    21,100.53x = 336,033,532.29
  5. Step 5: Solve for x
    x = 336,033,532.29/21,100.53
  6. Step 6: Final answer
    x = 15,925.36

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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.