Home / 21,133.63-29,164.35-12,181.06

Finding the Fourth Proportional to 21,133.63, 29,164.35 and 12,181.06

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Solution

The fourth proportional to 21,133.63, 29,164.35 and 12,181.06 is: 16,809.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,133.63 : 29,164.35 = 12,181.06 : x
  2. Step 2: Convert to fraction form
    21,133.63/29,164.35 = 12,181.06/x
  3. Step 3: Cross multiply
    21,133.63x = 29,164.35 × 12,181.06
  4. Step 4: Simplify right side
    21,133.63x = 355,252,551.39
  5. Step 5: Solve for x
    x = 355,252,551.39/21,133.63
  6. Step 6: Final answer
    x = 16,809.83

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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.