Home / 14,945.87-20,633.58-8,979

Finding the Fourth Proportional to 14,945.87, 20,633.58 and 8,979

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Solution

The fourth proportional to 14,945.87, 20,633.58 and 8,979 is: 12,396.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,945.87 : 20,633.58 = 8,979 : x
  2. Step 2: Convert to fraction form
    14,945.87/20,633.58 = 8,979/x
  3. Step 3: Cross multiply
    14,945.87x = 20,633.58 × 8,979
  4. Step 4: Simplify right side
    14,945.87x = 185,268,914.82
  5. Step 5: Solve for x
    x = 185,268,914.82/14,945.87
  6. Step 6: Final answer
    x = 12,396.00

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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.