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Finding the Fourth Proportional to 14,752.88, 20,361.60 and 8,788

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Solution

The fourth proportional to 14,752.88, 20,361.60 and 8,788 is: 12,129.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,752.88 : 20,361.60 = 8,788 : x
  2. Step 2: Convert to fraction form
    14,752.88/20,361.60 = 8,788/x
  3. Step 3: Cross multiply
    14,752.88x = 20,361.60 × 8,788
  4. Step 4: Simplify right side
    14,752.88x = 178,937,740.80
  5. Step 5: Solve for x
    x = 178,937,740.80/14,752.88
  6. Step 6: Final answer
    x = 12,129.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.