Home / 14,722.61-20,289.89-10,939.78

Finding the Fourth Proportional to 14,722.61, 20,289.89 and 10,939.78

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Solution

The fourth proportional to 14,722.61, 20,289.89 and 10,939.78 is: 15,076.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,722.61 : 20,289.89 = 10,939.78 : x
  2. Step 2: Convert to fraction form
    14,722.61/20,289.89 = 10,939.78/x
  3. Step 3: Cross multiply
    14,722.61x = 20,289.89 × 10,939.78
  4. Step 4: Simplify right side
    14,722.61x = 221,967,042.60
  5. Step 5: Solve for x
    x = 221,967,042.60/14,722.61
  6. Step 6: Final answer
    x = 15,076.61

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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.