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Finding the Fourth Proportional to 13,697.96, 18,903.32 and 7,729.04

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Solution

The fourth proportional to 13,697.96, 18,903.32 and 7,729.04 is: 10,666.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,697.96 : 18,903.32 = 7,729.04 : x
  2. Step 2: Convert to fraction form
    13,697.96/18,903.32 = 7,729.04/x
  3. Step 3: Cross multiply
    13,697.96x = 18,903.32 × 7,729.04
  4. Step 4: Simplify right side
    13,697.96x = 146,104,516.41
  5. Step 5: Solve for x
    x = 146,104,516.41/13,697.96
  6. Step 6: Final answer
    x = 10,666.15

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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.