Home / 28,171.56-42,215.64-11,511.48

Finding the Fourth Proportional to 28,171.56, 42,215.64 and 11,511.48

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Solution

The fourth proportional to 28,171.56, 42,215.64 and 11,511.48 is: 17,250.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,171.56 : 42,215.64 = 11,511.48 : x
  2. Step 2: Convert to fraction form
    28,171.56/42,215.64 = 11,511.48/x
  3. Step 3: Cross multiply
    28,171.56x = 42,215.64 × 11,511.48
  4. Step 4: Simplify right side
    28,171.56x = 485,964,495.55
  5. Step 5: Solve for x
    x = 485,964,495.55/28,171.56
  6. Step 6: Final answer
    x = 17,250.18

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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.