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Finding the Fourth Proportional to 14,157.87, 21,230.12 and 4,295.12

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Solution

The fourth proportional to 14,157.87, 21,230.12 and 4,295.12 is: 6,440.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,157.87 : 21,230.12 = 4,295.12 : x
  2. Step 2: Convert to fraction form
    14,157.87/21,230.12 = 4,295.12/x
  3. Step 3: Cross multiply
    14,157.87x = 21,230.12 × 4,295.12
  4. Step 4: Simplify right side
    14,157.87x = 91,185,785.39
  5. Step 5: Solve for x
    x = 91,185,785.39/14,157.87
  6. Step 6: Final answer
    x = 6,440.64

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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.