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Finding the Fourth Proportional to 18,299.61, 27,430.56 and 7,201.80

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Solution

The fourth proportional to 18,299.61, 27,430.56 and 7,201.80 is: 10,795.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,299.61 : 27,430.56 = 7,201.80 : x
  2. Step 2: Convert to fraction form
    18,299.61/27,430.56 = 7,201.80/x
  3. Step 3: Cross multiply
    18,299.61x = 27,430.56 × 7,201.80
  4. Step 4: Simplify right side
    18,299.61x = 197,549,407.01
  5. Step 5: Solve for x
    x = 197,549,407.01/18,299.61
  6. Step 6: Final answer
    x = 10,795.28

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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.