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Finding the Fourth Proportional to 26,230.39, 39,345.53 and 8,220

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Solution

The fourth proportional to 26,230.39, 39,345.53 and 8,220 is: 12,329.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,230.39 : 39,345.53 = 8,220 : x
  2. Step 2: Convert to fraction form
    26,230.39/39,345.53 = 8,220/x
  3. Step 3: Cross multiply
    26,230.39x = 39,345.53 × 8,220
  4. Step 4: Simplify right side
    26,230.39x = 323,420,256.60
  5. Step 5: Solve for x
    x = 323,420,256.60/26,230.39
  6. Step 6: Final answer
    x = 12,329.98

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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.