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Finding the Fourth Proportional to 26,839.20, 40,258.80 and 19,927.20

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Solution

The fourth proportional to 26,839.20, 40,258.80 and 19,927.20 is: 29,890.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,839.20 : 40,258.80 = 19,927.20 : x
  2. Step 2: Convert to fraction form
    26,839.20/40,258.80 = 19,927.20/x
  3. Step 3: Cross multiply
    26,839.20x = 40,258.80 × 19,927.20
  4. Step 4: Simplify right side
    26,839.20x = 802,245,159.36
  5. Step 5: Solve for x
    x = 802,245,159.36/26,839.20
  6. Step 6: Final answer
    x = 29,890.80

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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.