Home / 14,078.92-19,427.70-7,789.72

Finding the Fourth Proportional to 14,078.92, 19,427.70 and 7,789.72

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Solution

The fourth proportional to 14,078.92, 19,427.70 and 7,789.72 is: 10,749.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,078.92 : 19,427.70 = 7,789.72 : x
  2. Step 2: Convert to fraction form
    14,078.92/19,427.70 = 7,789.72/x
  3. Step 3: Cross multiply
    14,078.92x = 19,427.70 × 7,789.72
  4. Step 4: Simplify right side
    14,078.92x = 151,336,343.24
  5. Step 5: Solve for x
    x = 151,336,343.24/14,078.92
  6. Step 6: Final answer
    x = 10,749.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.