Home / 12,669.39-18,999.95-5,271.86

Finding the Fourth Proportional to 12,669.39, 18,999.95 and 5,271.86

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Solution

The fourth proportional to 12,669.39, 18,999.95 and 5,271.86 is: 7,906.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,669.39 : 18,999.95 = 5,271.86 : x
  2. Step 2: Convert to fraction form
    12,669.39/18,999.95 = 5,271.86/x
  3. Step 3: Cross multiply
    12,669.39x = 18,999.95 × 5,271.86
  4. Step 4: Simplify right side
    12,669.39x = 100,165,076.41
  5. Step 5: Solve for x
    x = 100,165,076.41/12,669.39
  6. Step 6: Final answer
    x = 7,906.07

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1.5x scale

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.