Home / 20,654.63-28,503.33-11,223.19

Finding the Fourth Proportional to 20,654.63, 28,503.33 and 11,223.19

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Solution

The fourth proportional to 20,654.63, 28,503.33 and 11,223.19 is: 15,487.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,654.63 : 28,503.33 = 11,223.19 : x
  2. Step 2: Convert to fraction form
    20,654.63/28,503.33 = 11,223.19/x
  3. Step 3: Cross multiply
    20,654.63x = 28,503.33 × 11,223.19
  4. Step 4: Simplify right side
    20,654.63x = 319,898,160.85
  5. Step 5: Solve for x
    x = 319,898,160.85/20,654.63
  6. Step 6: Final answer
    x = 15,487.97

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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.