Home / 12,747.48-19,130.44-7,211.63

Finding the Fourth Proportional to 12,747.48, 19,130.44 and 7,211.63

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Solution

The fourth proportional to 12,747.48, 19,130.44 and 7,211.63 is: 10,822.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,747.48 : 19,130.44 = 7,211.63 : x
  2. Step 2: Convert to fraction form
    12,747.48/19,130.44 = 7,211.63/x
  3. Step 3: Cross multiply
    12,747.48x = 19,130.44 × 7,211.63
  4. Step 4: Simplify right side
    12,747.48x = 137,961,708.48
  5. Step 5: Solve for x
    x = 137,961,708.48/12,747.48
  6. Step 6: Final answer
    x = 10,822.67

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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.