Home / 20,727.53-28,613.60-12,226.79

Finding the Fourth Proportional to 20,727.53, 28,613.60 and 12,226.79

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Solution

The fourth proportional to 20,727.53, 28,613.60 and 12,226.79 is: 16,878.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,727.53 : 28,613.60 = 12,226.79 : x
  2. Step 2: Convert to fraction form
    20,727.53/28,613.60 = 12,226.79/x
  3. Step 3: Cross multiply
    20,727.53x = 28,613.60 × 12,226.79
  4. Step 4: Simplify right side
    20,727.53x = 349,852,417.21
  5. Step 5: Solve for x
    x = 349,852,417.21/20,727.53
  6. Step 6: Final answer
    x = 16,878.64

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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.