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Finding the Fourth Proportional to 55,362.39, 83,043.59 and 13,809.39

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Solution

The fourth proportional to 55,362.39, 83,043.59 and 13,809.39 is: 20,714.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,362.39 : 83,043.59 = 13,809.39 : x
  2. Step 2: Convert to fraction form
    55,362.39/83,043.59 = 13,809.39/x
  3. Step 3: Cross multiply
    55,362.39x = 83,043.59 × 13,809.39
  4. Step 4: Simplify right side
    55,362.39x = 1,146,781,321.31
  5. Step 5: Solve for x
    x = 1,146,781,321.31/55,362.39
  6. Step 6: Final answer
    x = 20,714.09

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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.