Home / 10,782.30-16,172.01-2,990.46

Finding the Fourth Proportional to 10,782.30, 16,172.01 and 2,990.46

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Solution

The fourth proportional to 10,782.30, 16,172.01 and 2,990.46 is: 4,485.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,782.30 : 16,172.01 = 2,990.46 : x
  2. Step 2: Convert to fraction form
    10,782.30/16,172.01 = 2,990.46/x
  3. Step 3: Cross multiply
    10,782.30x = 16,172.01 × 2,990.46
  4. Step 4: Simplify right side
    10,782.30x = 48,361,749.02
  5. Step 5: Solve for x
    x = 48,361,749.02/10,782.30
  6. Step 6: Final answer
    x = 4,485.29

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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.