Home / 20,688.52-28,545.30-11,733.96

Finding the Fourth Proportional to 20,688.52, 28,545.30 and 11,733.96

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Solution

The fourth proportional to 20,688.52, 28,545.30 and 11,733.96 is: 16,190.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,688.52 : 28,545.30 = 11,733.96 : x
  2. Step 2: Convert to fraction form
    20,688.52/28,545.30 = 11,733.96/x
  3. Step 3: Cross multiply
    20,688.52x = 28,545.30 × 11,733.96
  4. Step 4: Simplify right side
    20,688.52x = 334,949,408.39
  5. Step 5: Solve for x
    x = 334,949,408.39/20,688.52
  6. Step 6: Final answer
    x = 16,190.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.