Home / 20,111.40-30,171.15-16,847.10

Finding the Fourth Proportional to 20,111.40, 30,171.15 and 16,847.10

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Solution

The fourth proportional to 20,111.40, 30,171.15 and 16,847.10 is: 25,274.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,111.40 : 30,171.15 = 16,847.10 : x
  2. Step 2: Convert to fraction form
    20,111.40/30,171.15 = 16,847.10/x
  3. Step 3: Cross multiply
    20,111.40x = 30,171.15 × 16,847.10
  4. Step 4: Simplify right side
    20,111.40x = 508,296,381.17
  5. Step 5: Solve for x
    x = 508,296,381.17/20,111.40
  6. Step 6: Final answer
    x = 25,274.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.