Home / 28,518.48-42,704.82-16,839.90

Finding the Fourth Proportional to 28,518.48, 42,704.82 and 16,839.90

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Solution

The fourth proportional to 28,518.48, 42,704.82 and 16,839.90 is: 25,216.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,518.48 : 42,704.82 = 16,839.90 : x
  2. Step 2: Convert to fraction form
    28,518.48/42,704.82 = 16,839.90/x
  3. Step 3: Cross multiply
    28,518.48x = 42,704.82 × 16,839.90
  4. Step 4: Simplify right side
    28,518.48x = 719,144,898.32
  5. Step 5: Solve for x
    x = 719,144,898.32/28,518.48
  6. Step 6: Final answer
    x = 25,216.80

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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.