Home / 20,613.07-30,878.58-11,239.04

Finding the Fourth Proportional to 20,613.07, 30,878.58 and 11,239.04

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Solution

The fourth proportional to 20,613.07, 30,878.58 and 11,239.04 is: 16,836.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,613.07 : 30,878.58 = 11,239.04 : x
  2. Step 2: Convert to fraction form
    20,613.07/30,878.58 = 11,239.04/x
  3. Step 3: Cross multiply
    20,613.07x = 30,878.58 × 11,239.04
  4. Step 4: Simplify right side
    20,613.07x = 347,045,541.41
  5. Step 5: Solve for x
    x = 347,045,541.41/20,613.07
  6. Step 6: Final answer
    x = 16,836.19

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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.