Home / 45,511.79-68,275.51-13,921.09

Finding the Fourth Proportional to 45,511.79, 68,275.51 and 13,921.09

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Solution

The fourth proportional to 45,511.79, 68,275.51 and 13,921.09 is: 20,884.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,511.79 : 68,275.51 = 13,921.09 : x
  2. Step 2: Convert to fraction form
    45,511.79/68,275.51 = 13,921.09/x
  3. Step 3: Cross multiply
    45,511.79x = 68,275.51 × 13,921.09
  4. Step 4: Simplify right side
    45,511.79x = 950,469,314.01
  5. Step 5: Solve for x
    x = 950,469,314.01/45,511.79
  6. Step 6: Final answer
    x = 20,884.02

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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.