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Finding the Fourth Proportional to 28,874.88, 43,313.86 and 9,154.98

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Solution

The fourth proportional to 28,874.88, 43,313.86 and 9,154.98 is: 13,732.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,874.88 : 43,313.86 = 9,154.98 : x
  2. Step 2: Convert to fraction form
    28,874.88/43,313.86 = 9,154.98/x
  3. Step 3: Cross multiply
    28,874.88x = 43,313.86 × 9,154.98
  4. Step 4: Simplify right side
    28,874.88x = 396,537,522.02
  5. Step 5: Solve for x
    x = 396,537,522.02/28,874.88
  6. Step 6: Final answer
    x = 13,732.96

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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.