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Finding the Fourth Proportional to 28,268.88, 42,422.76 and 9,800.88

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Solution

The fourth proportional to 28,268.88, 42,422.76 and 9,800.88 is: 14,708.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,268.88 : 42,422.76 = 9,800.88 : x
  2. Step 2: Convert to fraction form
    28,268.88/42,422.76 = 9,800.88/x
  3. Step 3: Cross multiply
    28,268.88x = 42,422.76 × 9,800.88
  4. Step 4: Simplify right side
    28,268.88x = 415,780,118.91
  5. Step 5: Solve for x
    x = 415,780,118.91/28,268.88
  6. Step 6: Final answer
    x = 14,708.05

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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.