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Finding the Fourth Proportional to 28,653.32, 42,980.57 and 8,932.04

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Solution

The fourth proportional to 28,653.32, 42,980.57 and 8,932.04 is: 13,398.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,653.32 : 42,980.57 = 8,932.04 : x
  2. Step 2: Convert to fraction form
    28,653.32/42,980.57 = 8,932.04/x
  3. Step 3: Cross multiply
    28,653.32x = 42,980.57 × 8,932.04
  4. Step 4: Simplify right side
    28,653.32x = 383,903,910.90
  5. Step 5: Solve for x
    x = 383,903,910.90/28,653.32
  6. Step 6: Final answer
    x = 13,398.24

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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.