Home / 14,639.64-21,958.44-4,778.70

Finding the Fourth Proportional to 14,639.64, 21,958.44 and 4,778.70

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Solution

The fourth proportional to 14,639.64, 21,958.44 and 4,778.70 is: 7,167.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,639.64 : 21,958.44 = 4,778.70 : x
  2. Step 2: Convert to fraction form
    14,639.64/21,958.44 = 4,778.70/x
  3. Step 3: Cross multiply
    14,639.64x = 21,958.44 × 4,778.70
  4. Step 4: Simplify right side
    14,639.64x = 104,932,797.23
  5. Step 5: Solve for x
    x = 104,932,797.23/14,639.64
  6. Step 6: Final answer
    x = 7,167.72

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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.