Home / 21,313.20-32,003.40-12,554.80

Finding the Fourth Proportional to 21,313.20, 32,003.40 and 12,554.80

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Solution

The fourth proportional to 21,313.20, 32,003.40 and 12,554.80 is: 18,851.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,313.20 : 32,003.40 = 12,554.80 : x
  2. Step 2: Convert to fraction form
    21,313.20/32,003.40 = 12,554.80/x
  3. Step 3: Cross multiply
    21,313.20x = 32,003.40 × 12,554.80
  4. Step 4: Simplify right side
    21,313.20x = 401,796,286.32
  5. Step 5: Solve for x
    x = 401,796,286.32/21,313.20
  6. Step 6: Final answer
    x = 18,851.99

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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.