Home / 21,027.60-31,544.64-9,940.32

Finding the Fourth Proportional to 21,027.60, 31,544.64 and 9,940.32

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Solution

The fourth proportional to 21,027.60, 31,544.64 and 9,940.32 is: 14,912.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,027.60 : 31,544.64 = 9,940.32 : x
  2. Step 2: Convert to fraction form
    21,027.60/31,544.64 = 9,940.32/x
  3. Step 3: Cross multiply
    21,027.60x = 31,544.64 × 9,940.32
  4. Step 4: Simplify right side
    21,027.60x = 313,563,815.88
  5. Step 5: Solve for x
    x = 313,563,815.88/21,027.60
  6. Step 6: Final answer
    x = 14,912.01

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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.