Home / 13,218.86-19,827.68-3,358.32

Finding the Fourth Proportional to 13,218.86, 19,827.68 and 3,358.32

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Solution

The fourth proportional to 13,218.86, 19,827.68 and 3,358.32 is: 5,037.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,218.86 : 19,827.68 = 3,358.32 : x
  2. Step 2: Convert to fraction form
    13,218.86/19,827.68 = 3,358.32/x
  3. Step 3: Cross multiply
    13,218.86x = 19,827.68 × 3,358.32
  4. Step 4: Simplify right side
    13,218.86x = 66,587,677.51
  5. Step 5: Solve for x
    x = 66,587,677.51/13,218.86
  6. Step 6: Final answer
    x = 5,037.33

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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.