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Finding the Fourth Proportional to 16,810.64, 25,219.80 and 5,124.80

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Solution

The fourth proportional to 16,810.64, 25,219.80 and 5,124.80 is: 7,688.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,810.64 : 25,219.80 = 5,124.80 : x
  2. Step 2: Convert to fraction form
    16,810.64/25,219.80 = 5,124.80/x
  3. Step 3: Cross multiply
    16,810.64x = 25,219.80 × 5,124.80
  4. Step 4: Simplify right side
    16,810.64x = 129,246,431.04
  5. Step 5: Solve for x
    x = 129,246,431.04/16,810.64
  6. Step 6: Final answer
    x = 7,688.37

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Why These Related Problems?

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