Home / 20,644.03-28,487.32-11,445.49

Finding the Fourth Proportional to 20,644.03, 28,487.32 and 11,445.49

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Solution

The fourth proportional to 20,644.03, 28,487.32 and 11,445.49 is: 15,793.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,644.03 : 28,487.32 = 11,445.49 : x
  2. Step 2: Convert to fraction form
    20,644.03/28,487.32 = 11,445.49/x
  3. Step 3: Cross multiply
    20,644.03x = 28,487.32 × 11,445.49
  4. Step 4: Simplify right side
    20,644.03x = 326,051,299.10
  5. Step 5: Solve for x
    x = 326,051,299.10/20,644.03
  6. Step 6: Final answer
    x = 15,793.98

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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.