Home / 28,403.17-42,589.69-8,409.92

Finding the Fourth Proportional to 28,403.17, 42,589.69 and 8,409.92

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Solution

The fourth proportional to 28,403.17, 42,589.69 and 8,409.92 is: 12,610.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,403.17 : 42,589.69 = 8,409.92 : x
  2. Step 2: Convert to fraction form
    28,403.17/42,589.69 = 8,409.92/x
  3. Step 3: Cross multiply
    28,403.17x = 42,589.69 × 8,409.92
  4. Step 4: Simplify right side
    28,403.17x = 358,175,651.75
  5. Step 5: Solve for x
    x = 358,175,651.75/28,403.17
  6. Step 6: Final answer
    x = 12,610.41

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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.