Home / 15,118.25-20,860.13-8,829.41

Finding the Fourth Proportional to 15,118.25, 20,860.13 and 8,829.41

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Solution

The fourth proportional to 15,118.25, 20,860.13 and 8,829.41 is: 12,182.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,118.25 : 20,860.13 = 8,829.41 : x
  2. Step 2: Convert to fraction form
    15,118.25/20,860.13 = 8,829.41/x
  3. Step 3: Cross multiply
    15,118.25x = 20,860.13 × 8,829.41
  4. Step 4: Simplify right side
    15,118.25x = 184,182,558.20
  5. Step 5: Solve for x
    x = 184,182,558.20/15,118.25
  6. Step 6: Final answer
    x = 12,182.80

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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.