Home / 13,130.13-19,690.91-4,243.37

Finding the Fourth Proportional to 13,130.13, 19,690.91 and 4,243.37

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Solution

The fourth proportional to 13,130.13, 19,690.91 and 4,243.37 is: 6,363.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,130.13 : 19,690.91 = 4,243.37 : x
  2. Step 2: Convert to fraction form
    13,130.13/19,690.91 = 4,243.37/x
  3. Step 3: Cross multiply
    13,130.13x = 19,690.91 × 4,243.37
  4. Step 4: Simplify right side
    13,130.13x = 83,555,784.14
  5. Step 5: Solve for x
    x = 83,555,784.14/13,130.13
  6. Step 6: Final answer
    x = 6,363.67

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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.