Home / 13,746.43-20,619.65-4,978.45

Finding the Fourth Proportional to 13,746.43, 20,619.65 and 4,978.45

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Solution

The fourth proportional to 13,746.43, 20,619.65 and 4,978.45 is: 7,467.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,746.43 : 20,619.65 = 4,978.45 : x
  2. Step 2: Convert to fraction form
    13,746.43/20,619.65 = 4,978.45/x
  3. Step 3: Cross multiply
    13,746.43x = 20,619.65 × 4,978.45
  4. Step 4: Simplify right side
    13,746.43x = 102,653,896.54
  5. Step 5: Solve for x
    x = 102,653,896.54/13,746.43
  6. Step 6: Final answer
    x = 7,467.68

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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.