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Finding the Fourth Proportional to 13,610, 20,415 and 4,376

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Solution

The fourth proportional to 13,610, 20,415 and 4,376 is: 6,564

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,610 : 20,415 = 4,376 : x
  2. Step 2: Convert to fraction form
    13,610/20,415 = 4,376/x
  3. Step 3: Cross multiply
    13,610x = 20,415 × 4,376
  4. Step 4: Simplify right side
    13,610x = 89,336,040
  5. Step 5: Solve for x
    x = 89,336,040/13,610
  6. Step 6: Final answer
    x = 6,564

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.