Home / 11,783.10-16,260.79-6,405.55

Finding the Fourth Proportional to 11,783.10, 16,260.79 and 6,405.55

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Solution

The fourth proportional to 11,783.10, 16,260.79 and 6,405.55 is: 8,839.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,783.10 : 16,260.79 = 6,405.55 : x
  2. Step 2: Convert to fraction form
    11,783.10/16,260.79 = 6,405.55/x
  3. Step 3: Cross multiply
    11,783.10x = 16,260.79 × 6,405.55
  4. Step 4: Simplify right side
    11,783.10x = 104,159,305.54
  5. Step 5: Solve for x
    x = 104,159,305.54/11,783.10
  6. Step 6: Final answer
    x = 8,839.72

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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.