Home / 13,715.76-18,913.60-11,732.88

Finding the Fourth Proportional to 13,715.76, 18,913.60 and 11,732.88

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Solution

The fourth proportional to 13,715.76, 18,913.60 and 11,732.88 is: 16,179.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,715.76 : 18,913.60 = 11,732.88 : x
  2. Step 2: Convert to fraction form
    13,715.76/18,913.60 = 11,732.88/x
  3. Step 3: Cross multiply
    13,715.76x = 18,913.60 × 11,732.88
  4. Step 4: Simplify right side
    13,715.76x = 221,910,999.17
  5. Step 5: Solve for x
    x = 221,910,999.17/13,715.76
  6. Step 6: Final answer
    x = 16,179.27

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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.