Home / 14,336.70-21,505.41-6,939.78

Finding the Fourth Proportional to 14,336.70, 21,505.41 and 6,939.78

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Solution

The fourth proportional to 14,336.70, 21,505.41 and 6,939.78 is: 10,409.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,336.70 : 21,505.41 = 6,939.78 : x
  2. Step 2: Convert to fraction form
    14,336.70/21,505.41 = 6,939.78/x
  3. Step 3: Cross multiply
    14,336.70x = 21,505.41 × 6,939.78
  4. Step 4: Simplify right side
    14,336.70x = 149,242,814.21
  5. Step 5: Solve for x
    x = 149,242,814.21/14,336.70
  6. Step 6: Final answer
    x = 10,409.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.