Home / 11,728.76-16,185.69-6,423.91

Finding the Fourth Proportional to 11,728.76, 16,185.69 and 6,423.91

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Solution

The fourth proportional to 11,728.76, 16,185.69 and 6,423.91 is: 8,865.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,728.76 : 16,185.69 = 6,423.91 : x
  2. Step 2: Convert to fraction form
    11,728.76/16,185.69 = 6,423.91/x
  3. Step 3: Cross multiply
    11,728.76x = 16,185.69 × 6,423.91
  4. Step 4: Simplify right side
    11,728.76x = 103,975,415.85
  5. Step 5: Solve for x
    x = 103,975,415.85/11,728.76
  6. Step 6: Final answer
    x = 8,865.00

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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.