Home / 11,709.90-16,159.68-6,404.76

Finding the Fourth Proportional to 11,709.90, 16,159.68 and 6,404.76

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Solution

The fourth proportional to 11,709.90, 16,159.68 and 6,404.76 is: 8,838.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,709.90 : 16,159.68 = 6,404.76 : x
  2. Step 2: Convert to fraction form
    11,709.90/16,159.68 = 6,404.76/x
  3. Step 3: Cross multiply
    11,709.90x = 16,159.68 × 6,404.76
  4. Step 4: Simplify right side
    11,709.90x = 103,498,872.08
  5. Step 5: Solve for x
    x = 103,498,872.08/11,709.90
  6. Step 6: Final answer
    x = 8,838.58

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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.