Home / 21,647.22-29,862.16-13,147.08

Finding the Fourth Proportional to 21,647.22, 29,862.16 and 13,147.08

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Solution

The fourth proportional to 21,647.22, 29,862.16 and 13,147.08 is: 18,136.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,647.22 : 29,862.16 = 13,147.08 : x
  2. Step 2: Convert to fraction form
    21,647.22/29,862.16 = 13,147.08/x
  3. Step 3: Cross multiply
    21,647.22x = 29,862.16 × 13,147.08
  4. Step 4: Simplify right side
    21,647.22x = 392,600,173.63
  5. Step 5: Solve for x
    x = 392,600,173.63/21,647.22
  6. Step 6: Final answer
    x = 18,136.29

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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.