Home / 12,478.83-18,718.03-3,713.82

Finding the Fourth Proportional to 12,478.83, 18,718.03 and 3,713.82

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Solution

The fourth proportional to 12,478.83, 18,718.03 and 3,713.82 is: 5,570.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,478.83 : 18,718.03 = 3,713.82 : x
  2. Step 2: Convert to fraction form
    12,478.83/18,718.03 = 3,713.82/x
  3. Step 3: Cross multiply
    12,478.83x = 18,718.03 × 3,713.82
  4. Step 4: Simplify right side
    12,478.83x = 69,515,394.17
  5. Step 5: Solve for x
    x = 69,515,394.17/12,478.83
  6. Step 6: Final answer
    x = 5,570.67

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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.