Home / 28,137.12-42,190.10-11,508.83

Finding the Fourth Proportional to 28,137.12, 42,190.10 and 11,508.83

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Solution

The fourth proportional to 28,137.12, 42,190.10 and 11,508.83 is: 17,256.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,137.12 : 42,190.10 = 11,508.83 : x
  2. Step 2: Convert to fraction form
    28,137.12/42,190.10 = 11,508.83/x
  3. Step 3: Cross multiply
    28,137.12x = 42,190.10 × 11,508.83
  4. Step 4: Simplify right side
    28,137.12x = 485,558,420.09
  5. Step 5: Solve for x
    x = 485,558,420.09/28,137.12
  6. Step 6: Final answer
    x = 17,256.86

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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.