Home / 45,020.31-67,533.88-13,427.90

Finding the Fourth Proportional to 45,020.31, 67,533.88 and 13,427.90

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Solution

The fourth proportional to 45,020.31, 67,533.88 and 13,427.90 is: 20,142.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,020.31 : 67,533.88 = 13,427.90 : x
  2. Step 2: Convert to fraction form
    45,020.31/67,533.88 = 13,427.90/x
  3. Step 3: Cross multiply
    45,020.31x = 67,533.88 × 13,427.90
  4. Step 4: Simplify right side
    45,020.31x = 906,837,819.25
  5. Step 5: Solve for x
    x = 906,837,819.25/45,020.31
  6. Step 6: Final answer
    x = 20,142.86

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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.