Home / 20,815.93-28,727.04-12,322.93

Finding the Fourth Proportional to 20,815.93, 28,727.04 and 12,322.93

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Solution

The fourth proportional to 20,815.93, 28,727.04 and 12,322.93 is: 17,006.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,815.93 : 28,727.04 = 12,322.93 : x
  2. Step 2: Convert to fraction form
    20,815.93/28,727.04 = 12,322.93/x
  3. Step 3: Cross multiply
    20,815.93x = 28,727.04 × 12,322.93
  4. Step 4: Simplify right side
    20,815.93x = 354,001,241.41
  5. Step 5: Solve for x
    x = 354,001,241.41/20,815.93
  6. Step 6: Final answer
    x = 17,006.27

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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.