Home / 13,986.22-19,290.90-8,015.74

Finding the Fourth Proportional to 13,986.22, 19,290.90 and 8,015.74

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Solution

The fourth proportional to 13,986.22, 19,290.90 and 8,015.74 is: 11,055.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,986.22 : 19,290.90 = 8,015.74 : x
  2. Step 2: Convert to fraction form
    13,986.22/19,290.90 = 8,015.74/x
  3. Step 3: Cross multiply
    13,986.22x = 19,290.90 × 8,015.74
  4. Step 4: Simplify right side
    13,986.22x = 154,630,838.77
  5. Step 5: Solve for x
    x = 154,630,838.77/13,986.22
  6. Step 6: Final answer
    x = 11,055.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.