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Finding the Fourth Proportional to 13,450.70, 18,561.93 and 7,482.74

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Solution

The fourth proportional to 13,450.70, 18,561.93 and 7,482.74 is: 10,326.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,450.70 : 18,561.93 = 7,482.74 : x
  2. Step 2: Convert to fraction form
    13,450.70/18,561.93 = 7,482.74/x
  3. Step 3: Cross multiply
    13,450.70x = 18,561.93 × 7,482.74
  4. Step 4: Simplify right side
    13,450.70x = 138,894,096.09
  5. Step 5: Solve for x
    x = 138,894,096.09/13,450.70
  6. Step 6: Final answer
    x = 10,326.16

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.