Home / 20,654.72-28,503.74-11,223.29

Finding the Fourth Proportional to 20,654.72, 28,503.74 and 11,223.29

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Solution

The fourth proportional to 20,654.72, 28,503.74 and 11,223.29 is: 15,488.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,654.72 : 28,503.74 = 11,223.29 : x
  2. Step 2: Convert to fraction form
    20,654.72/28,503.74 = 11,223.29/x
  3. Step 3: Cross multiply
    20,654.72x = 28,503.74 × 11,223.29
  4. Step 4: Simplify right side
    20,654.72x = 319,905,625.64
  5. Step 5: Solve for x
    x = 319,905,625.64/20,654.72
  6. Step 6: Final answer
    x = 15,488.26

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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.