Home / 45,945.38-68,921.99-12,665.46

Finding the Fourth Proportional to 45,945.38, 68,921.99 and 12,665.46

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Solution

The fourth proportional to 45,945.38, 68,921.99 and 12,665.46 is: 18,999.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,945.38 : 68,921.99 = 12,665.46 : x
  2. Step 2: Convert to fraction form
    45,945.38/68,921.99 = 12,665.46/x
  3. Step 3: Cross multiply
    45,945.38x = 68,921.99 × 12,665.46
  4. Step 4: Simplify right side
    45,945.38x = 872,928,950.09
  5. Step 5: Solve for x
    x = 872,928,950.09/45,945.38
  6. Step 6: Final answer
    x = 18,999.28

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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.