Home / 12,858.78-19,272.76-6,621.74

Finding the Fourth Proportional to 12,858.78, 19,272.76 and 6,621.74

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Solution

The fourth proportional to 12,858.78, 19,272.76 and 6,621.74 is: 9,924.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,858.78 : 19,272.76 = 6,621.74 : x
  2. Step 2: Convert to fraction form
    12,858.78/19,272.76 = 6,621.74/x
  3. Step 3: Cross multiply
    12,858.78x = 19,272.76 × 6,621.74
  4. Step 4: Simplify right side
    12,858.78x = 127,619,092.88
  5. Step 5: Solve for x
    x = 127,619,092.88/12,858.78
  6. Step 6: Final answer
    x = 9,924.67

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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.