Home / 34,156.53-47,122.43-20,722.86

Finding the Fourth Proportional to 34,156.53, 47,122.43 and 20,722.86

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Solution

The fourth proportional to 34,156.53, 47,122.43 and 20,722.86 is: 28,589.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,156.53 : 47,122.43 = 20,722.86 : x
  2. Step 2: Convert to fraction form
    34,156.53/47,122.43 = 20,722.86/x
  3. Step 3: Cross multiply
    34,156.53x = 47,122.43 × 20,722.86
  4. Step 4: Simplify right side
    34,156.53x = 976,511,416.14
  5. Step 5: Solve for x
    x = 976,511,416.14/34,156.53
  6. Step 6: Final answer
    x = 28,589.30

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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.