Home / 12,681.75-19,031.27-4,473.75

Finding the Fourth Proportional to 12,681.75, 19,031.27 and 4,473.75

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Solution

The fourth proportional to 12,681.75, 19,031.27 and 4,473.75 is: 6,713.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,681.75 : 19,031.27 = 4,473.75 : x
  2. Step 2: Convert to fraction form
    12,681.75/19,031.27 = 4,473.75/x
  3. Step 3: Cross multiply
    12,681.75x = 19,031.27 × 4,473.75
  4. Step 4: Simplify right side
    12,681.75x = 85,141,121.79
  5. Step 5: Solve for x
    x = 85,141,121.79/12,681.75
  6. Step 6: Final answer
    x = 6,713.67

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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.