Home / 12,247.70-16,878.12-8,261.88

Finding the Fourth Proportional to 12,247.70, 16,878.12 and 8,261.88

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Solution

The fourth proportional to 12,247.70, 16,878.12 and 8,261.88 is: 11,385.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,247.70 : 16,878.12 = 8,261.88 : x
  2. Step 2: Convert to fraction form
    12,247.70/16,878.12 = 8,261.88/x
  3. Step 3: Cross multiply
    12,247.70x = 16,878.12 × 8,261.88
  4. Step 4: Simplify right side
    12,247.70x = 139,445,002.07
  5. Step 5: Solve for x
    x = 139,445,002.07/12,247.70
  6. Step 6: Final answer
    x = 11,385.41

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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.