Home / 12,726.42-19,111.34-8,291.67

Finding the Fourth Proportional to 12,726.42, 19,111.34 and 8,291.67

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Solution

The fourth proportional to 12,726.42, 19,111.34 and 8,291.67 is: 12,451.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,726.42 : 19,111.34 = 8,291.67 : x
  2. Step 2: Convert to fraction form
    12,726.42/19,111.34 = 8,291.67/x
  3. Step 3: Cross multiply
    12,726.42x = 19,111.34 × 8,291.67
  4. Step 4: Simplify right side
    12,726.42x = 158,464,873.60
  5. Step 5: Solve for x
    x = 158,464,873.60/12,726.42
  6. Step 6: Final answer
    x = 12,451.65

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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.