Home / 28,379.12-42,565.76-12,584.44

Finding the Fourth Proportional to 28,379.12, 42,565.76 and 12,584.44

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Solution

The fourth proportional to 28,379.12, 42,565.76 and 12,584.44 is: 18,875.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,379.12 : 42,565.76 = 12,584.44 : x
  2. Step 2: Convert to fraction form
    28,379.12/42,565.76 = 12,584.44/x
  3. Step 3: Cross multiply
    28,379.12x = 42,565.76 × 12,584.44
  4. Step 4: Simplify right side
    28,379.12x = 535,666,252.77
  5. Step 5: Solve for x
    x = 535,666,252.77/28,379.12
  6. Step 6: Final answer
    x = 18,875.37

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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.