Home / 21,119.26-29,136.28-13,564.54

Finding the Fourth Proportional to 21,119.26, 29,136.28 and 13,564.54

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Solution

The fourth proportional to 21,119.26, 29,136.28 and 13,564.54 is: 18,713.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,119.26 : 29,136.28 = 13,564.54 : x
  2. Step 2: Convert to fraction form
    21,119.26/29,136.28 = 13,564.54/x
  3. Step 3: Cross multiply
    21,119.26x = 29,136.28 × 13,564.54
  4. Step 4: Simplify right side
    21,119.26x = 395,220,235.51
  5. Step 5: Solve for x
    x = 395,220,235.51/21,119.26
  6. Step 6: Final answer
    x = 18,713.74

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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.