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Finding the Fourth Proportional to 28,504.99, 42,757.58 and 16,810

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Solution

The fourth proportional to 28,504.99, 42,757.58 and 16,810 is: 25,215.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,504.99 : 42,757.58 = 16,810 : x
  2. Step 2: Convert to fraction form
    28,504.99/42,757.58 = 16,810/x
  3. Step 3: Cross multiply
    28,504.99x = 42,757.58 × 16,810
  4. Step 4: Simplify right side
    28,504.99x = 718,754,919.80
  5. Step 5: Solve for x
    x = 718,754,919.80/28,504.99
  6. Step 6: Final answer
    x = 25,215.06

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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.