Home / 11,779.78-16,256.41-6,474.74

Finding the Fourth Proportional to 11,779.78, 16,256.41 and 6,474.74

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Solution

The fourth proportional to 11,779.78, 16,256.41 and 6,474.74 is: 8,935.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,779.78 : 16,256.41 = 6,474.74 : x
  2. Step 2: Convert to fraction form
    11,779.78/16,256.41 = 6,474.74/x
  3. Step 3: Cross multiply
    11,779.78x = 16,256.41 × 6,474.74
  4. Step 4: Simplify right side
    11,779.78x = 105,256,028.08
  5. Step 5: Solve for x
    x = 105,256,028.08/11,779.78
  6. Step 6: Final answer
    x = 8,935.31

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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.