Home / 34,245.18-47,272.89-20,820.72

Finding the Fourth Proportional to 34,245.18, 47,272.89 and 20,820.72

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Solution

The fourth proportional to 34,245.18, 47,272.89 and 20,820.72 is: 28,741.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,245.18 : 47,272.89 = 20,820.72 : x
  2. Step 2: Convert to fraction form
    34,245.18/47,272.89 = 20,820.72/x
  3. Step 3: Cross multiply
    34,245.18x = 47,272.89 × 20,820.72
  4. Step 4: Simplify right side
    34,245.18x = 984,255,527.14
  5. Step 5: Solve for x
    x = 984,255,527.14/34,245.18
  6. Step 6: Final answer
    x = 28,741.43

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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.