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Finding the Fourth Proportional to 28,531.85, 42,797.97 and 8,809.97

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Solution

The fourth proportional to 28,531.85, 42,797.97 and 8,809.97 is: 13,215.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,531.85 : 42,797.97 = 8,809.97 : x
  2. Step 2: Convert to fraction form
    28,531.85/42,797.97 = 8,809.97/x
  3. Step 3: Cross multiply
    28,531.85x = 42,797.97 × 8,809.97
  4. Step 4: Simplify right side
    28,531.85x = 377,048,617.77
  5. Step 5: Solve for x
    x = 377,048,617.77/28,531.85
  6. Step 6: Final answer
    x = 13,215.01

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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.