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Finding the Fourth Proportional to 28,003.20, 42,004.80 and 22,754.40

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Solution

The fourth proportional to 28,003.20, 42,004.80 and 22,754.40 is: 34,131.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,003.20 : 42,004.80 = 22,754.40 : x
  2. Step 2: Convert to fraction form
    28,003.20/42,004.80 = 22,754.40/x
  3. Step 3: Cross multiply
    28,003.20x = 42,004.80 × 22,754.40
  4. Step 4: Simplify right side
    28,003.20x = 955,794,021.12
  5. Step 5: Solve for x
    x = 955,794,021.12/28,003.20
  6. Step 6: Final answer
    x = 34,131.60

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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.