Home / 13,788.81-19,028.94-8,486.67

Finding the Fourth Proportional to 13,788.81, 19,028.94 and 8,486.67

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Solution

The fourth proportional to 13,788.81, 19,028.94 and 8,486.67 is: 11,711.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,788.81 : 19,028.94 = 8,486.67 : x
  2. Step 2: Convert to fraction form
    13,788.81/19,028.94 = 8,486.67/x
  3. Step 3: Cross multiply
    13,788.81x = 19,028.94 × 8,486.67
  4. Step 4: Simplify right side
    13,788.81x = 161,492,334.23
  5. Step 5: Solve for x
    x = 161,492,334.23/13,788.81
  6. Step 6: Final answer
    x = 11,711.84

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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.