Home / 12,711.62-19,071.58-6,138.56

Finding the Fourth Proportional to 12,711.62, 19,071.58 and 6,138.56

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Solution

The fourth proportional to 12,711.62, 19,071.58 and 6,138.56 is: 9,209.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,711.62 : 19,071.58 = 6,138.56 : x
  2. Step 2: Convert to fraction form
    12,711.62/19,071.58 = 6,138.56/x
  3. Step 3: Cross multiply
    12,711.62x = 19,071.58 × 6,138.56
  4. Step 4: Simplify right side
    12,711.62x = 117,072,038.12
  5. Step 5: Solve for x
    x = 117,072,038.12/12,711.62
  6. Step 6: Final answer
    x = 9,209.84

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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.