Home / 20,664.01-28,517.22-12,708.86

Finding the Fourth Proportional to 20,664.01, 28,517.22 and 12,708.86

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Solution

The fourth proportional to 20,664.01, 28,517.22 and 12,708.86 is: 17,538.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,664.01 : 28,517.22 = 12,708.86 : x
  2. Step 2: Convert to fraction form
    20,664.01/28,517.22 = 12,708.86/x
  3. Step 3: Cross multiply
    20,664.01x = 28,517.22 × 12,708.86
  4. Step 4: Simplify right side
    20,664.01x = 362,421,293.02
  5. Step 5: Solve for x
    x = 362,421,293.02/20,664.01
  6. Step 6: Final answer
    x = 17,538.77

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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.