Home / 14,138.52-19,509.68-8,172.12

Finding the Fourth Proportional to 14,138.52, 19,509.68 and 8,172.12

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Solution

The fourth proportional to 14,138.52, 19,509.68 and 8,172.12 is: 11,276.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,138.52 : 19,509.68 = 8,172.12 : x
  2. Step 2: Convert to fraction form
    14,138.52/19,509.68 = 8,172.12/x
  3. Step 3: Cross multiply
    14,138.52x = 19,509.68 × 8,172.12
  4. Step 4: Simplify right side
    14,138.52x = 159,435,446.12
  5. Step 5: Solve for x
    x = 159,435,446.12/14,138.52
  6. Step 6: Final answer
    x = 11,276.67

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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.