Home / 11,877.45-16,392.61-6,840.69

Finding the Fourth Proportional to 11,877.45, 16,392.61 and 6,840.69

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Solution

The fourth proportional to 11,877.45, 16,392.61 and 6,840.69 is: 9,441.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,877.45 : 16,392.61 = 6,840.69 : x
  2. Step 2: Convert to fraction form
    11,877.45/16,392.61 = 6,840.69/x
  3. Step 3: Cross multiply
    11,877.45x = 16,392.61 × 6,840.69
  4. Step 4: Simplify right side
    11,877.45x = 112,136,705.22
  5. Step 5: Solve for x
    x = 112,136,705.22/11,877.45
  6. Step 6: Final answer
    x = 9,441.15

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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.