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Finding the Fourth Proportional to 28,305.56, 39,062.04 and 16,369.40

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Solution

The fourth proportional to 28,305.56, 39,062.04 and 16,369.40 is: 22,589.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,305.56 : 39,062.04 = 16,369.40 : x
  2. Step 2: Convert to fraction form
    28,305.56/39,062.04 = 16,369.40/x
  3. Step 3: Cross multiply
    28,305.56x = 39,062.04 × 16,369.40
  4. Step 4: Simplify right side
    28,305.56x = 639,422,157.58
  5. Step 5: Solve for x
    x = 639,422,157.58/28,305.56
  6. Step 6: Final answer
    x = 22,589.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.