Home / 13,955.46-20,911.31-11,866.88

Finding the Fourth Proportional to 13,955.46, 20,911.31 and 11,866.88

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Solution

The fourth proportional to 13,955.46, 20,911.31 and 11,866.88 is: 17,781.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,955.46 : 20,911.31 = 11,866.88 : x
  2. Step 2: Convert to fraction form
    13,955.46/20,911.31 = 11,866.88/x
  3. Step 3: Cross multiply
    13,955.46x = 20,911.31 × 11,866.88
  4. Step 4: Simplify right side
    13,955.46x = 248,152,006.41
  5. Step 5: Solve for x
    x = 248,152,006.41/13,955.46
  6. Step 6: Final answer
    x = 17,781.71

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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.