Home / 28,139.37-42,198.76-12,333.52

Finding the Fourth Proportional to 28,139.37, 42,198.76 and 12,333.52

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Solution

The fourth proportional to 28,139.37, 42,198.76 and 12,333.52 is: 18,495.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,139.37 : 42,198.76 = 12,333.52 : x
  2. Step 2: Convert to fraction form
    28,139.37/42,198.76 = 12,333.52/x
  3. Step 3: Cross multiply
    28,139.37x = 42,198.76 × 12,333.52
  4. Step 4: Simplify right side
    28,139.37x = 520,459,250.44
  5. Step 5: Solve for x
    x = 520,459,250.44/28,139.37
  6. Step 6: Final answer
    x = 18,495.77

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1.5x scale

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.