Home / 12,519.45-18,788.63-8,561.25

Finding the Fourth Proportional to 12,519.45, 18,788.63 and 8,561.25

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Solution

The fourth proportional to 12,519.45, 18,788.63 and 8,561.25 is: 12,848.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,519.45 : 18,788.63 = 8,561.25 : x
  2. Step 2: Convert to fraction form
    12,519.45/18,788.63 = 8,561.25/x
  3. Step 3: Cross multiply
    12,519.45x = 18,788.63 × 8,561.25
  4. Step 4: Simplify right side
    12,519.45x = 160,854,115.78
  5. Step 5: Solve for x
    x = 160,854,115.78/12,519.45
  6. Step 6: Final answer
    x = 12,848.34

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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.