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Finding the Fourth Proportional to 18,945.48, 28,402.02 and 7,267.08

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Solution

The fourth proportional to 18,945.48, 28,402.02 and 7,267.08 is: 10,894.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,945.48 : 28,402.02 = 7,267.08 : x
  2. Step 2: Convert to fraction form
    18,945.48/28,402.02 = 7,267.08/x
  3. Step 3: Cross multiply
    18,945.48x = 28,402.02 × 7,267.08
  4. Step 4: Simplify right side
    18,945.48x = 206,399,751.50
  5. Step 5: Solve for x
    x = 206,399,751.50/18,945.48
  6. Step 6: Final answer
    x = 10,894.41

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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.