Home / 14,485.08-21,690.87-12,138.92

Finding the Fourth Proportional to 14,485.08, 21,690.87 and 12,138.92

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Solution

The fourth proportional to 14,485.08, 21,690.87 and 12,138.92 is: 18,177.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,485.08 : 21,690.87 = 12,138.92 : x
  2. Step 2: Convert to fraction form
    14,485.08/21,690.87 = 12,138.92/x
  3. Step 3: Cross multiply
    14,485.08x = 21,690.87 × 12,138.92
  4. Step 4: Simplify right side
    14,485.08x = 263,303,735.66
  5. Step 5: Solve for x
    x = 263,303,735.66/14,485.08
  6. Step 6: Final answer
    x = 18,177.58

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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.