Home / 28,511.95-42,773.62-8,789.77

Finding the Fourth Proportional to 28,511.95, 42,773.62 and 8,789.77

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Solution

The fourth proportional to 28,511.95, 42,773.62 and 8,789.77 is: 13,186.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,511.95 : 42,773.62 = 8,789.77 : x
  2. Step 2: Convert to fraction form
    28,511.95/42,773.62 = 8,789.77/x
  3. Step 3: Cross multiply
    28,511.95x = 42,773.62 × 8,789.77
  4. Step 4: Simplify right side
    28,511.95x = 375,970,089.24
  5. Step 5: Solve for x
    x = 375,970,089.24/28,511.95
  6. Step 6: Final answer
    x = 13,186.40

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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.