Home / 13,940.82-20,886.93-11,615.76

Finding the Fourth Proportional to 13,940.82, 20,886.93 and 11,615.76

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Solution

The fourth proportional to 13,940.82, 20,886.93 and 11,615.76 is: 17,403.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,940.82 : 20,886.93 = 11,615.76 : x
  2. Step 2: Convert to fraction form
    13,940.82/20,886.93 = 11,615.76/x
  3. Step 3: Cross multiply
    13,940.82x = 20,886.93 × 11,615.76
  4. Step 4: Simplify right side
    13,940.82x = 242,617,566.02
  5. Step 5: Solve for x
    x = 242,617,566.02/13,940.82
  6. Step 6: Final answer
    x = 17,403.39

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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.