Home / 21,612.63-29,825.66-12,181.19

Finding the Fourth Proportional to 21,612.63, 29,825.66 and 12,181.19

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Solution

The fourth proportional to 21,612.63, 29,825.66 and 12,181.19 is: 16,810.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,612.63 : 29,825.66 = 12,181.19 : x
  2. Step 2: Convert to fraction form
    21,612.63/29,825.66 = 12,181.19/x
  3. Step 3: Cross multiply
    21,612.63x = 29,825.66 × 12,181.19
  4. Step 4: Simplify right side
    21,612.63x = 363,312,136.35
  5. Step 5: Solve for x
    x = 363,312,136.35/21,612.63
  6. Step 6: Final answer
    x = 16,810.18

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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.