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Finding the Fourth Proportional to 13,117.68, 19,750.55 and 11,567.67

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Solution

The fourth proportional to 13,117.68, 19,750.55 and 11,567.67 is: 17,416.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,117.68 : 19,750.55 = 11,567.67 : x
  2. Step 2: Convert to fraction form
    13,117.68/19,750.55 = 11,567.67/x
  3. Step 3: Cross multiply
    13,117.68x = 19,750.55 × 11,567.67
  4. Step 4: Simplify right side
    13,117.68x = 228,467,786.88
  5. Step 5: Solve for x
    x = 228,467,786.88/13,117.68
  6. Step 6: Final answer
    x = 17,416.78

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These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.