Home / 20,181.79-27,845.30-12,113.35

Finding the Fourth Proportional to 20,181.79, 27,845.30 and 12,113.35

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Solution

The fourth proportional to 20,181.79, 27,845.30 and 12,113.35 is: 16,713.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,181.79 : 27,845.30 = 12,113.35 : x
  2. Step 2: Convert to fraction form
    20,181.79/27,845.30 = 12,113.35/x
  3. Step 3: Cross multiply
    20,181.79x = 27,845.30 × 12,113.35
  4. Step 4: Simplify right side
    20,181.79x = 337,299,825.43
  5. Step 5: Solve for x
    x = 337,299,825.43/20,181.79
  6. Step 6: Final answer
    x = 16,713.08

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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.