Home / 28,284.54-42,390.18-11,625.72

Finding the Fourth Proportional to 28,284.54, 42,390.18 and 11,625.72

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Solution

The fourth proportional to 28,284.54, 42,390.18 and 11,625.72 is: 17,423.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,284.54 : 42,390.18 = 11,625.72 : x
  2. Step 2: Convert to fraction form
    28,284.54/42,390.18 = 11,625.72/x
  3. Step 3: Cross multiply
    28,284.54x = 42,390.18 × 11,625.72
  4. Step 4: Simplify right side
    28,284.54x = 492,816,363.43
  5. Step 5: Solve for x
    x = 492,816,363.43/28,284.54
  6. Step 6: Final answer
    x = 17,423.52

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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.