Home / 12,990.53-19,493.07-5,199.95

Finding the Fourth Proportional to 12,990.53, 19,493.07 and 5,199.95

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Solution

The fourth proportional to 12,990.53, 19,493.07 and 5,199.95 is: 7,802.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,990.53 : 19,493.07 = 5,199.95 : x
  2. Step 2: Convert to fraction form
    12,990.53/19,493.07 = 5,199.95/x
  3. Step 3: Cross multiply
    12,990.53x = 19,493.07 × 5,199.95
  4. Step 4: Simplify right side
    12,990.53x = 101,362,989.35
  5. Step 5: Solve for x
    x = 101,362,989.35/12,990.53
  6. Step 6: Final answer
    x = 7,802.84

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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.