Home / 11,815.32-16,305.83-6,779.50

Finding the Fourth Proportional to 11,815.32, 16,305.83 and 6,779.50

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Solution

The fourth proportional to 11,815.32, 16,305.83 and 6,779.50 is: 9,356.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,815.32 : 16,305.83 = 6,779.50 : x
  2. Step 2: Convert to fraction form
    11,815.32/16,305.83 = 6,779.50/x
  3. Step 3: Cross multiply
    11,815.32x = 16,305.83 × 6,779.50
  4. Step 4: Simplify right side
    11,815.32x = 110,545,374.49
  5. Step 5: Solve for x
    x = 110,545,374.49/11,815.32
  6. Step 6: Final answer
    x = 9,356.10

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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.