Home / 20,784.85-28,683.80-11,354.02

Finding the Fourth Proportional to 20,784.85, 28,683.80 and 11,354.02

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Solution

The fourth proportional to 20,784.85, 28,683.80 and 11,354.02 is: 15,668.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,784.85 : 28,683.80 = 11,354.02 : x
  2. Step 2: Convert to fraction form
    20,784.85/28,683.80 = 11,354.02/x
  3. Step 3: Cross multiply
    20,784.85x = 28,683.80 × 11,354.02
  4. Step 4: Simplify right side
    20,784.85x = 325,676,310.40
  5. Step 5: Solve for x
    x = 325,676,310.40/20,784.85
  6. Step 6: Final answer
    x = 15,668.93

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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.