Home / 21,169.22-29,213.55-12,671.69

Finding the Fourth Proportional to 21,169.22, 29,213.55 and 12,671.69

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Solution

The fourth proportional to 21,169.22, 29,213.55 and 12,671.69 is: 17,486.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,169.22 : 29,213.55 = 12,671.69 : x
  2. Step 2: Convert to fraction form
    21,169.22/29,213.55 = 12,671.69/x
  3. Step 3: Cross multiply
    21,169.22x = 29,213.55 × 12,671.69
  4. Step 4: Simplify right side
    21,169.22x = 370,184,903.33
  5. Step 5: Solve for x
    x = 370,184,903.33/21,169.22
  6. Step 6: Final answer
    x = 17,486.95

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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.