Home / 18,699.42-28,022.40-13,730.07

Finding the Fourth Proportional to 18,699.42, 28,022.40 and 13,730.07

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Solution

The fourth proportional to 18,699.42, 28,022.40 and 13,730.07 is: 20,575.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,699.42 : 28,022.40 = 13,730.07 : x
  2. Step 2: Convert to fraction form
    18,699.42/28,022.40 = 13,730.07/x
  3. Step 3: Cross multiply
    18,699.42x = 28,022.40 × 13,730.07
  4. Step 4: Simplify right side
    18,699.42x = 384,749,513.57
  5. Step 5: Solve for x
    x = 384,749,513.57/18,699.42
  6. Step 6: Final answer
    x = 20,575.48

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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.