Home / 15,609.78-23,519.97-12,897.09

Finding the Fourth Proportional to 15,609.78, 23,519.97 and 12,897.09

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Solution

The fourth proportional to 15,609.78, 23,519.97 and 12,897.09 is: 19,432.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,609.78 : 23,519.97 = 12,897.09 : x
  2. Step 2: Convert to fraction form
    15,609.78/23,519.97 = 12,897.09/x
  3. Step 3: Cross multiply
    15,609.78x = 23,519.97 × 12,897.09
  4. Step 4: Simplify right side
    15,609.78x = 303,339,169.89
  5. Step 5: Solve for x
    x = 303,339,169.89/15,609.78
  6. Step 6: Final answer
    x = 19,432.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.