Home / 13,788.59-20,664.43-5,015.21

Finding the Fourth Proportional to 13,788.59, 20,664.43 and 5,015.21

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Solution

The fourth proportional to 13,788.59, 20,664.43 and 5,015.21 is: 7,516.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,788.59 : 20,664.43 = 5,015.21 : x
  2. Step 2: Convert to fraction form
    13,788.59/20,664.43 = 5,015.21/x
  3. Step 3: Cross multiply
    13,788.59x = 20,664.43 × 5,015.21
  4. Step 4: Simplify right side
    13,788.59x = 103,636,340.12
  5. Step 5: Solve for x
    x = 103,636,340.12/13,788.59
  6. Step 6: Final answer
    x = 7,516.10

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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.