Home / 34,631.87-47,785.91-20,479.55

Finding the Fourth Proportional to 34,631.87, 47,785.91 and 20,479.55

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Solution

The fourth proportional to 34,631.87, 47,785.91 and 20,479.55 is: 28,258.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,631.87 : 47,785.91 = 20,479.55 : x
  2. Step 2: Convert to fraction form
    34,631.87/47,785.91 = 20,479.55/x
  3. Step 3: Cross multiply
    34,631.87x = 47,785.91 × 20,479.55
  4. Step 4: Simplify right side
    34,631.87x = 978,633,591.81
  5. Step 5: Solve for x
    x = 978,633,591.81/34,631.87
  6. Step 6: Final answer
    x = 28,258.18

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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.