Home / 20,128.30-30,192.45-16,434.70

Finding the Fourth Proportional to 20,128.30, 30,192.45 and 16,434.70

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Solution

The fourth proportional to 20,128.30, 30,192.45 and 16,434.70 is: 24,652.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,128.30 : 30,192.45 = 16,434.70 : x
  2. Step 2: Convert to fraction form
    20,128.30/30,192.45 = 16,434.70/x
  3. Step 3: Cross multiply
    20,128.30x = 30,192.45 × 16,434.70
  4. Step 4: Simplify right side
    20,128.30x = 496,203,858.02
  5. Step 5: Solve for x
    x = 496,203,858.02/20,128.30
  6. Step 6: Final answer
    x = 24,652.05

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Double scale
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Similar ratio
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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.