Home / 12,990.62-19,487.47-4,669.94

Finding the Fourth Proportional to 12,990.62, 19,487.47 and 4,669.94

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Solution

The fourth proportional to 12,990.62, 19,487.47 and 4,669.94 is: 7,005.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,990.62 : 19,487.47 = 4,669.94 : x
  2. Step 2: Convert to fraction form
    12,990.62/19,487.47 = 4,669.94/x
  3. Step 3: Cross multiply
    12,990.62x = 19,487.47 × 4,669.94
  4. Step 4: Simplify right side
    12,990.62x = 91,005,315.65
  5. Step 5: Solve for x
    x = 91,005,315.65/12,990.62
  6. Step 6: Final answer
    x = 7,005.46

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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.