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Finding the Fourth Proportional to 12,361.76, 17,047.80 and 10,940.18

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Solution

The fourth proportional to 12,361.76, 17,047.80 and 10,940.18 is: 15,087.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,361.76 : 17,047.80 = 10,940.18 : x
  2. Step 2: Convert to fraction form
    12,361.76/17,047.80 = 10,940.18/x
  3. Step 3: Cross multiply
    12,361.76x = 17,047.80 × 10,940.18
  4. Step 4: Simplify right side
    12,361.76x = 186,506,000.60
  5. Step 5: Solve for x
    x = 186,506,000.60/12,361.76
  6. Step 6: Final answer
    x = 15,087.33

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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.