Home / 11,160.81-15,381.63-10,840.95

Finding the Fourth Proportional to 11,160.81, 15,381.63 and 10,840.95

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Solution

The fourth proportional to 11,160.81, 15,381.63 and 10,840.95 is: 14,940.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,160.81 : 15,381.63 = 10,840.95 : x
  2. Step 2: Convert to fraction form
    11,160.81/15,381.63 = 10,840.95/x
  3. Step 3: Cross multiply
    11,160.81x = 15,381.63 × 10,840.95
  4. Step 4: Simplify right side
    11,160.81x = 166,751,481.75
  5. Step 5: Solve for x
    x = 166,751,481.75/11,160.81
  6. Step 6: Final answer
    x = 14,940.80

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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.