Home / 20,252.32-30,378.72-7,105.06

Finding the Fourth Proportional to 20,252.32, 30,378.72 and 7,105.06

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Solution

The fourth proportional to 20,252.32, 30,378.72 and 7,105.06 is: 10,657.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,252.32 : 30,378.72 = 7,105.06 : x
  2. Step 2: Convert to fraction form
    20,252.32/30,378.72 = 7,105.06/x
  3. Step 3: Cross multiply
    20,252.32x = 30,378.72 × 7,105.06
  4. Step 4: Simplify right side
    20,252.32x = 215,842,628.32
  5. Step 5: Solve for x
    x = 215,842,628.32/20,252.32
  6. Step 6: Final answer
    x = 10,657.67

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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.