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Finding the Fourth Proportional to 35,157.78, 48,499.56 and 20,809.44

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Solution

The fourth proportional to 35,157.78, 48,499.56 and 20,809.44 is: 28,706.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,157.78 : 48,499.56 = 20,809.44 : x
  2. Step 2: Convert to fraction form
    35,157.78/48,499.56 = 20,809.44/x
  3. Step 3: Cross multiply
    35,157.78x = 48,499.56 × 20,809.44
  4. Step 4: Simplify right side
    35,157.78x = 1,009,248,683.85
  5. Step 5: Solve for x
    x = 1,009,248,683.85/35,157.78
  6. Step 6: Final answer
    x = 28,706.27

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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.