Home / 11,787.20-16,266.19-8,775.77

Finding the Fourth Proportional to 11,787.20, 16,266.19 and 8,775.77

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Solution

The fourth proportional to 11,787.20, 16,266.19 and 8,775.77 is: 12,110.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,787.20 : 16,266.19 = 8,775.77 : x
  2. Step 2: Convert to fraction form
    11,787.20/16,266.19 = 8,775.77/x
  3. Step 3: Cross multiply
    11,787.20x = 16,266.19 × 8,775.77
  4. Step 4: Simplify right side
    11,787.20x = 142,748,393.85
  5. Step 5: Solve for x
    x = 142,748,393.85/11,787.20
  6. Step 6: Final answer
    x = 12,110.46

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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.