Home / 19,680.60-27,158.23-11,181.61

Finding the Fourth Proportional to 19,680.60, 27,158.23 and 11,181.61

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Solution

The fourth proportional to 19,680.60, 27,158.23 and 11,181.61 is: 15,430.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,680.60 : 27,158.23 = 11,181.61 : x
  2. Step 2: Convert to fraction form
    19,680.60/27,158.23 = 11,181.61/x
  3. Step 3: Cross multiply
    19,680.60x = 27,158.23 × 11,181.61
  4. Step 4: Simplify right side
    19,680.60x = 303,672,682.23
  5. Step 5: Solve for x
    x = 303,672,682.23/19,680.60
  6. Step 6: Final answer
    x = 15,430.05

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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.