Home / 15,118.75-20,860.82-8,829.91

Finding the Fourth Proportional to 15,118.75, 20,860.82 and 8,829.91

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Solution

The fourth proportional to 15,118.75, 20,860.82 and 8,829.91 is: 12,183.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,118.75 : 20,860.82 = 8,829.91 : x
  2. Step 2: Convert to fraction form
    15,118.75/20,860.82 = 8,829.91/x
  3. Step 3: Cross multiply
    15,118.75x = 20,860.82 × 8,829.91
  4. Step 4: Simplify right side
    15,118.75x = 184,199,058.82
  5. Step 5: Solve for x
    x = 184,199,058.82/15,118.75
  6. Step 6: Final answer
    x = 12,183.49

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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.