Home / 18,945.72-28,425.89-7,256.21

Finding the Fourth Proportional to 18,945.72, 28,425.89 and 7,256.21

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Solution

The fourth proportional to 18,945.72, 28,425.89 and 7,256.21 is: 10,887.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,945.72 : 28,425.89 = 7,256.21 : x
  2. Step 2: Convert to fraction form
    18,945.72/28,425.89 = 7,256.21/x
  3. Step 3: Cross multiply
    18,945.72x = 28,425.89 × 7,256.21
  4. Step 4: Simplify right side
    18,945.72x = 206,264,048.87
  5. Step 5: Solve for x
    x = 206,264,048.87/18,945.72
  6. Step 6: Final answer
    x = 10,887.11

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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.