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Finding the Fourth Proportional to 28,598.60, 42,922.20 and 12,827.90

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Solution

The fourth proportional to 28,598.60, 42,922.20 and 12,827.90 is: 19,252.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,598.60 : 42,922.20 = 12,827.90 : x
  2. Step 2: Convert to fraction form
    28,598.60/42,922.20 = 12,827.90/x
  3. Step 3: Cross multiply
    28,598.60x = 42,922.20 × 12,827.90
  4. Step 4: Simplify right side
    28,598.60x = 550,601,689.38
  5. Step 5: Solve for x
    x = 550,601,689.38/28,598.60
  6. Step 6: Final answer
    x = 19,252.75

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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.