Home / 28,379.97-42,526.22-12,582.54

Finding the Fourth Proportional to 28,379.97, 42,526.22 and 12,582.54

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Solution

The fourth proportional to 28,379.97, 42,526.22 and 12,582.54 is: 18,854.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,379.97 : 42,526.22 = 12,582.54 : x
  2. Step 2: Convert to fraction form
    28,379.97/42,526.22 = 12,582.54/x
  3. Step 3: Cross multiply
    28,379.97x = 42,526.22 × 12,582.54
  4. Step 4: Simplify right side
    28,379.97x = 535,087,801.29
  5. Step 5: Solve for x
    x = 535,087,801.29/28,379.97
  6. Step 6: Final answer
    x = 18,854.42

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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.