Home / 28,111.20-42,139.80-16,252.80

Finding the Fourth Proportional to 28,111.20, 42,139.80 and 16,252.80

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Solution

The fourth proportional to 28,111.20, 42,139.80 and 16,252.80 is: 24,363.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,111.20 : 42,139.80 = 16,252.80 : x
  2. Step 2: Convert to fraction form
    28,111.20/42,139.80 = 16,252.80/x
  3. Step 3: Cross multiply
    28,111.20x = 42,139.80 × 16,252.80
  4. Step 4: Simplify right side
    28,111.20x = 684,889,741.44
  5. Step 5: Solve for x
    x = 684,889,741.44/28,111.20
  6. Step 6: Final answer
    x = 24,363.59

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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.