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Finding the Fourth Proportional to 13,586.08, 18,748.86 and 7,924.76

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Solution

The fourth proportional to 13,586.08, 18,748.86 and 7,924.76 is: 10,936.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,586.08 : 18,748.86 = 7,924.76 : x
  2. Step 2: Convert to fraction form
    13,586.08/18,748.86 = 7,924.76/x
  3. Step 3: Cross multiply
    13,586.08x = 18,748.86 × 7,924.76
  4. Step 4: Simplify right side
    13,586.08x = 148,580,215.77
  5. Step 5: Solve for x
    x = 148,580,215.77/13,586.08
  6. Step 6: Final answer
    x = 10,936.21

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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.