Home / 19,638.78-29,467.56-9,778.92

Finding the Fourth Proportional to 19,638.78, 29,467.56 and 9,778.92

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Solution

The fourth proportional to 19,638.78, 29,467.56 and 9,778.92 is: 14,673.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,638.78 : 29,467.56 = 9,778.92 : x
  2. Step 2: Convert to fraction form
    19,638.78/29,467.56 = 9,778.92/x
  3. Step 3: Cross multiply
    19,638.78x = 29,467.56 × 9,778.92
  4. Step 4: Simplify right side
    19,638.78x = 288,160,911.84
  5. Step 5: Solve for x
    x = 288,160,911.84/19,638.78
  6. Step 6: Final answer
    x = 14,673.06

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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.