Home / 11,710.79-16,161.28-6,405.61

Finding the Fourth Proportional to 11,710.79, 16,161.28 and 6,405.61

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Solution

The fourth proportional to 11,710.79, 16,161.28 and 6,405.61 is: 8,839.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,710.79 : 16,161.28 = 6,405.61 : x
  2. Step 2: Convert to fraction form
    11,710.79/16,161.28 = 6,405.61/x
  3. Step 3: Cross multiply
    11,710.79x = 16,161.28 × 6,405.61
  4. Step 4: Simplify right side
    11,710.79x = 103,522,800.36
  5. Step 5: Solve for x
    x = 103,522,800.36/11,710.79
  6. Step 6: Final answer
    x = 8,839.95

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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.