Home / 13,518.70-20,278.04-4,751.58

Finding the Fourth Proportional to 13,518.70, 20,278.04 and 4,751.58

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Solution

The fourth proportional to 13,518.70, 20,278.04 and 4,751.58 is: 7,127.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,518.70 : 20,278.04 = 4,751.58 : x
  2. Step 2: Convert to fraction form
    13,518.70/20,278.04 = 4,751.58/x
  3. Step 3: Cross multiply
    13,518.70x = 20,278.04 × 4,751.58
  4. Step 4: Simplify right side
    13,518.70x = 96,352,729.30
  5. Step 5: Solve for x
    x = 96,352,729.30/13,518.70
  6. Step 6: Final answer
    x = 7,127.37

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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.