Home / 26,619.72-39,929.96-12,765.48

Finding the Fourth Proportional to 26,619.72, 39,929.96 and 12,765.48

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Solution

The fourth proportional to 26,619.72, 39,929.96 and 12,765.48 is: 19,148.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,619.72 : 39,929.96 = 12,765.48 : x
  2. Step 2: Convert to fraction form
    26,619.72/39,929.96 = 12,765.48/x
  3. Step 3: Cross multiply
    26,619.72x = 39,929.96 × 12,765.48
  4. Step 4: Simplify right side
    26,619.72x = 509,725,105.78
  5. Step 5: Solve for x
    x = 509,725,105.78/26,619.72
  6. Step 6: Final answer
    x = 19,148.40

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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.