Home / 13,986.69-20,973.75-4,122.51

Finding the Fourth Proportional to 13,986.69, 20,973.75 and 4,122.51

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Solution

The fourth proportional to 13,986.69, 20,973.75 and 4,122.51 is: 6,181.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,986.69 : 20,973.75 = 4,122.51 : x
  2. Step 2: Convert to fraction form
    13,986.69/20,973.75 = 4,122.51/x
  3. Step 3: Cross multiply
    13,986.69x = 20,973.75 × 4,122.51
  4. Step 4: Simplify right side
    13,986.69x = 86,464,494.11
  5. Step 5: Solve for x
    x = 86,464,494.11/13,986.69
  6. Step 6: Final answer
    x = 6,181.91

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1.5x scale

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.