Home / 13,420.98-20,126.79-4,653.99

Finding the Fourth Proportional to 13,420.98, 20,126.79 and 4,653.99

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Solution

The fourth proportional to 13,420.98, 20,126.79 and 4,653.99 is: 6,979.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,420.98 : 20,126.79 = 4,653.99 : x
  2. Step 2: Convert to fraction form
    13,420.98/20,126.79 = 4,653.99/x
  3. Step 3: Cross multiply
    13,420.98x = 20,126.79 × 4,653.99
  4. Step 4: Simplify right side
    13,420.98x = 93,669,879.39
  5. Step 5: Solve for x
    x = 93,669,879.39/13,420.98
  6. Step 6: Final answer
    x = 6,979.36

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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.