Home / 13,865.14-20,795.43-4,978.63

Finding the Fourth Proportional to 13,865.14, 20,795.43 and 4,978.63

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Solution

The fourth proportional to 13,865.14, 20,795.43 and 4,978.63 is: 7,467.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,865.14 : 20,795.43 = 4,978.63 : x
  2. Step 2: Convert to fraction form
    13,865.14/20,795.43 = 4,978.63/x
  3. Step 3: Cross multiply
    13,865.14x = 20,795.43 × 4,978.63
  4. Step 4: Simplify right side
    13,865.14x = 103,532,751.66
  5. Step 5: Solve for x
    x = 103,532,751.66/13,865.14
  6. Step 6: Final answer
    x = 7,467.13

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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.