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Finding the Fourth Proportional to 21,245.63, 31,873.03 and 7,206.03

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Solution

The fourth proportional to 21,245.63, 31,873.03 and 7,206.03 is: 10,810.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,245.63 : 31,873.03 = 7,206.03 : x
  2. Step 2: Convert to fraction form
    21,245.63/31,873.03 = 7,206.03/x
  3. Step 3: Cross multiply
    21,245.63x = 31,873.03 × 7,206.03
  4. Step 4: Simplify right side
    21,245.63x = 229,677,992.36
  5. Step 5: Solve for x
    x = 229,677,992.36/21,245.63
  6. Step 6: Final answer
    x = 10,810.60

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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.