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Finding the Fourth Proportional to 13,305.65, 18,360.68 and 7,337.12

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Solution

The fourth proportional to 13,305.65, 18,360.68 and 7,337.12 is: 10,124.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,305.65 : 18,360.68 = 7,337.12 : x
  2. Step 2: Convert to fraction form
    13,305.65/18,360.68 = 7,337.12/x
  3. Step 3: Cross multiply
    13,305.65x = 18,360.68 × 7,337.12
  4. Step 4: Simplify right side
    13,305.65x = 134,714,383.95
  5. Step 5: Solve for x
    x = 134,714,383.95/13,305.65
  6. Step 6: Final answer
    x = 10,124.60

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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.