Home / 13,788.16-20,664.96-6,392.32

Finding the Fourth Proportional to 13,788.16, 20,664.96 and 6,392.32

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Solution

The fourth proportional to 13,788.16, 20,664.96 and 6,392.32 is: 9,580.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,788.16 : 20,664.96 = 6,392.32 : x
  2. Step 2: Convert to fraction form
    13,788.16/20,664.96 = 6,392.32/x
  3. Step 3: Cross multiply
    13,788.16x = 20,664.96 × 6,392.32
  4. Step 4: Simplify right side
    13,788.16x = 132,097,037.11
  5. Step 5: Solve for x
    x = 132,097,037.11/13,788.16
  6. Step 6: Final answer
    x = 9,580.47

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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.