Home / 28,427.66-42,650.94-12,630.50

Finding the Fourth Proportional to 28,427.66, 42,650.94 and 12,630.50

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Solution

The fourth proportional to 28,427.66, 42,650.94 and 12,630.50 is: 18,949.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,427.66 : 42,650.94 = 12,630.50 : x
  2. Step 2: Convert to fraction form
    28,427.66/42,650.94 = 12,630.50/x
  3. Step 3: Cross multiply
    28,427.66x = 42,650.94 × 12,630.50
  4. Step 4: Simplify right side
    28,427.66x = 538,702,697.67
  5. Step 5: Solve for x
    x = 538,702,697.67/28,427.66
  6. Step 6: Final answer
    x = 18,949.95

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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.