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Finding the Fourth Proportional to 14,999.55, 20,650.95 and 12,342.39

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Solution

The fourth proportional to 14,999.55, 20,650.95 and 12,342.39 is: 16,992.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,999.55 : 20,650.95 = 12,342.39 : x
  2. Step 2: Convert to fraction form
    14,999.55/20,650.95 = 12,342.39/x
  3. Step 3: Cross multiply
    14,999.55x = 20,650.95 × 12,342.39
  4. Step 4: Simplify right side
    14,999.55x = 254,882,078.77
  5. Step 5: Solve for x
    x = 254,882,078.77/14,999.55
  6. Step 6: Final answer
    x = 16,992.65

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1.5x scale

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.