Home / 20,664.87-30,980.06-9,579.51

Finding the Fourth Proportional to 20,664.87, 30,980.06 and 9,579.51

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Solution

The fourth proportional to 20,664.87, 30,980.06 and 9,579.51 is: 14,361.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,664.87 : 30,980.06 = 9,579.51 : x
  2. Step 2: Convert to fraction form
    20,664.87/30,980.06 = 9,579.51/x
  3. Step 3: Cross multiply
    20,664.87x = 30,980.06 × 9,579.51
  4. Step 4: Simplify right side
    20,664.87x = 296,773,746.67
  5. Step 5: Solve for x
    x = 296,773,746.67/20,664.87
  6. Step 6: Final answer
    x = 14,361.27

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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.