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Finding the Fourth Proportional to 35,208, 52,812 and 13,320

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Solution

The fourth proportional to 35,208, 52,812 and 13,320 is: 19,980

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,208 : 52,812 = 13,320 : x
  2. Step 2: Convert to fraction form
    35,208/52,812 = 13,320/x
  3. Step 3: Cross multiply
    35,208x = 52,812 × 13,320
  4. Step 4: Simplify right side
    35,208x = 703,455,840
  5. Step 5: Solve for x
    x = 703,455,840/35,208
  6. Step 6: Final answer
    x = 19,980

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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.