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Finding the Fourth Proportional to 27,007.70, 40,511.55 and 20,446.70

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Solution

The fourth proportional to 27,007.70, 40,511.55 and 20,446.70 is: 30,670.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,007.70 : 40,511.55 = 20,446.70 : x
  2. Step 2: Convert to fraction form
    27,007.70/40,511.55 = 20,446.70/x
  3. Step 3: Cross multiply
    27,007.70x = 40,511.55 × 20,446.70
  4. Step 4: Simplify right side
    27,007.70x = 828,327,509.39
  5. Step 5: Solve for x
    x = 828,327,509.39/27,007.70
  6. Step 6: Final answer
    x = 30,670.05

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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.