Home / 11,778.02-16,256.49-8,987.30

Finding the Fourth Proportional to 11,778.02, 16,256.49 and 8,987.30

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Solution

The fourth proportional to 11,778.02, 16,256.49 and 8,987.30 is: 12,404.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,778.02 : 16,256.49 = 8,987.30 : x
  2. Step 2: Convert to fraction form
    11,778.02/16,256.49 = 8,987.30/x
  3. Step 3: Cross multiply
    11,778.02x = 16,256.49 × 8,987.30
  4. Step 4: Simplify right side
    11,778.02x = 146,101,952.58
  5. Step 5: Solve for x
    x = 146,101,952.58/11,778.02
  6. Step 6: Final answer
    x = 12,404.63

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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.