Home / 28,133.18-42,193.49-8,409.17

Finding the Fourth Proportional to 28,133.18, 42,193.49 and 8,409.17

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Solution

The fourth proportional to 28,133.18, 42,193.49 and 8,409.17 is: 12,611.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,133.18 : 42,193.49 = 8,409.17 : x
  2. Step 2: Convert to fraction form
    28,133.18/42,193.49 = 8,409.17/x
  3. Step 3: Cross multiply
    28,133.18x = 42,193.49 × 8,409.17
  4. Step 4: Simplify right side
    28,133.18x = 354,812,230.30
  5. Step 5: Solve for x
    x = 354,812,230.30/28,133.18
  6. Step 6: Final answer
    x = 12,611.88

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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.