Home / 21,170.22-29,214.93-12,672.69

Finding the Fourth Proportional to 21,170.22, 29,214.93 and 12,672.69

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Solution

The fourth proportional to 21,170.22, 29,214.93 and 12,672.69 is: 17,488.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,170.22 : 29,214.93 = 12,672.69 : x
  2. Step 2: Convert to fraction form
    21,170.22/29,214.93 = 12,672.69/x
  3. Step 3: Cross multiply
    21,170.22x = 29,214.93 × 12,672.69
  4. Step 4: Simplify right side
    21,170.22x = 370,231,751.26
  5. Step 5: Solve for x
    x = 370,231,751.26/21,170.22
  6. Step 6: Final answer
    x = 17,488.33

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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.