Home / 20,066.60-30,164.70-18,511.40

Finding the Fourth Proportional to 20,066.60, 30,164.70 and 18,511.40

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Solution

The fourth proportional to 20,066.60, 30,164.70 and 18,511.40 is: 27,826.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,066.60 : 30,164.70 = 18,511.40 : x
  2. Step 2: Convert to fraction form
    20,066.60/30,164.70 = 18,511.40/x
  3. Step 3: Cross multiply
    20,066.60x = 30,164.70 × 18,511.40
  4. Step 4: Simplify right side
    20,066.60x = 558,390,827.58
  5. Step 5: Solve for x
    x = 558,390,827.58/20,066.60
  6. Step 6: Final answer
    x = 27,826.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.