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Finding the Fourth Proportional to 13,817.16, 20,723.49 and 7,580.25

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Solution

The fourth proportional to 13,817.16, 20,723.49 and 7,580.25 is: 11,369.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,817.16 : 20,723.49 = 7,580.25 : x
  2. Step 2: Convert to fraction form
    13,817.16/20,723.49 = 7,580.25/x
  3. Step 3: Cross multiply
    13,817.16x = 20,723.49 × 7,580.25
  4. Step 4: Simplify right side
    13,817.16x = 157,089,235.07
  5. Step 5: Solve for x
    x = 157,089,235.07/13,817.16
  6. Step 6: Final answer
    x = 11,369.14

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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.