Home / 15,102.98-20,840.56-8,819

Finding the Fourth Proportional to 15,102.98, 20,840.56 and 8,819

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Solution

The fourth proportional to 15,102.98, 20,840.56 and 8,819 is: 12,169.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,102.98 : 20,840.56 = 8,819 : x
  2. Step 2: Convert to fraction form
    15,102.98/20,840.56 = 8,819/x
  3. Step 3: Cross multiply
    15,102.98x = 20,840.56 × 8,819
  4. Step 4: Simplify right side
    15,102.98x = 183,792,898.64
  5. Step 5: Solve for x
    x = 183,792,898.64/15,102.98
  6. Step 6: Final answer
    x = 12,169.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.