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Finding the Fourth Proportional to 26,825.20, 40,237.80 and 19,913.20

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Solution

The fourth proportional to 26,825.20, 40,237.80 and 19,913.20 is: 29,869.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,825.20 : 40,237.80 = 19,913.20 : x
  2. Step 2: Convert to fraction form
    26,825.20/40,237.80 = 19,913.20/x
  3. Step 3: Cross multiply
    26,825.20x = 40,237.80 × 19,913.20
  4. Step 4: Simplify right side
    26,825.20x = 801,263,358.96
  5. Step 5: Solve for x
    x = 801,263,358.96/26,825.20
  6. Step 6: Final answer
    x = 29,869.80

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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.