Home / 30,311.43-41,847.12-20,256.90

Finding the Fourth Proportional to 30,311.43, 41,847.12 and 20,256.90

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Solution

The fourth proportional to 30,311.43, 41,847.12 and 20,256.90 is: 27,966.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,311.43 : 41,847.12 = 20,256.90 : x
  2. Step 2: Convert to fraction form
    30,311.43/41,847.12 = 20,256.90/x
  3. Step 3: Cross multiply
    30,311.43x = 41,847.12 × 20,256.90
  4. Step 4: Simplify right side
    30,311.43x = 847,692,975.77
  5. Step 5: Solve for x
    x = 847,692,975.77/30,311.43
  6. Step 6: Final answer
    x = 27,966.12

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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.