Home / 13,215.45-19,813.77-6,191.67

Finding the Fourth Proportional to 13,215.45, 19,813.77 and 6,191.67

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Solution

The fourth proportional to 13,215.45, 19,813.77 and 6,191.67 is: 9,283.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,215.45 : 19,813.77 = 6,191.67 : x
  2. Step 2: Convert to fraction form
    13,215.45/19,813.77 = 6,191.67/x
  3. Step 3: Cross multiply
    13,215.45x = 19,813.77 × 6,191.67
  4. Step 4: Simplify right side
    13,215.45x = 122,680,325.30
  5. Step 5: Solve for x
    x = 122,680,325.30/13,215.45
  6. Step 6: Final answer
    x = 9,283.10

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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.