Home / 20,446.83-28,207.44-12,487.57

Finding the Fourth Proportional to 20,446.83, 28,207.44 and 12,487.57

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Solution

The fourth proportional to 20,446.83, 28,207.44 and 12,487.57 is: 17,227.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,446.83 : 28,207.44 = 12,487.57 : x
  2. Step 2: Convert to fraction form
    20,446.83/28,207.44 = 12,487.57/x
  3. Step 3: Cross multiply
    20,446.83x = 28,207.44 × 12,487.57
  4. Step 4: Simplify right side
    20,446.83x = 352,242,311.00
  5. Step 5: Solve for x
    x = 352,242,311.00/20,446.83
  6. Step 6: Final answer
    x = 17,227.23

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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.