Home / 11,710.72-16,160.88-6,405.64

Finding the Fourth Proportional to 11,710.72, 16,160.88 and 6,405.64

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Solution

The fourth proportional to 11,710.72, 16,160.88 and 6,405.64 is: 8,839.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,710.72 : 16,160.88 = 6,405.64 : x
  2. Step 2: Convert to fraction form
    11,710.72/16,160.88 = 6,405.64/x
  3. Step 3: Cross multiply
    11,710.72x = 16,160.88 × 6,405.64
  4. Step 4: Simplify right side
    11,710.72x = 103,520,779.36
  5. Step 5: Solve for x
    x = 103,520,779.36/11,710.72
  6. Step 6: Final answer
    x = 8,839.83

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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.