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Finding the Fourth Proportional to 26,585.64, 39,843.64 and 13,430.88

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Solution

The fourth proportional to 26,585.64, 39,843.64 and 13,430.88 is: 20,128.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,585.64 : 39,843.64 = 13,430.88 : x
  2. Step 2: Convert to fraction form
    26,585.64/39,843.64 = 13,430.88/x
  3. Step 3: Cross multiply
    26,585.64x = 39,843.64 × 13,430.88
  4. Step 4: Simplify right side
    26,585.64x = 535,135,147.60
  5. Step 5: Solve for x
    x = 535,135,147.60/26,585.64
  6. Step 6: Final answer
    x = 20,128.73

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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.