Home / 12,682.35-19,026.79-7,421.81

Finding the Fourth Proportional to 12,682.35, 19,026.79 and 7,421.81

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Solution

The fourth proportional to 12,682.35, 19,026.79 and 7,421.81 is: 11,134.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,682.35 : 19,026.79 = 7,421.81 : x
  2. Step 2: Convert to fraction form
    12,682.35/19,026.79 = 7,421.81/x
  3. Step 3: Cross multiply
    12,682.35x = 19,026.79 × 7,421.81
  4. Step 4: Simplify right side
    12,682.35x = 141,213,106.60
  5. Step 5: Solve for x
    x = 141,213,106.60/12,682.35
  6. Step 6: Final answer
    x = 11,134.62

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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.