Home / 26,809.60-40,214.40-18,515.20

Finding the Fourth Proportional to 26,809.60, 40,214.40 and 18,515.20

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Solution

The fourth proportional to 26,809.60, 40,214.40 and 18,515.20 is: 27,772.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,809.60 : 40,214.40 = 18,515.20 : x
  2. Step 2: Convert to fraction form
    26,809.60/40,214.40 = 18,515.20/x
  3. Step 3: Cross multiply
    26,809.60x = 40,214.40 × 18,515.20
  4. Step 4: Simplify right side
    26,809.60x = 744,577,658.88
  5. Step 5: Solve for x
    x = 744,577,658.88/26,809.60
  6. Step 6: Final answer
    x = 27,772.80

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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.