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Finding the Fourth Proportional to 18,393.39, 25,383.06 and 10,009.89

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Solution

The fourth proportional to 18,393.39, 25,383.06 and 10,009.89 is: 13,813.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,393.39 : 25,383.06 = 10,009.89 : x
  2. Step 2: Convert to fraction form
    18,393.39/25,383.06 = 10,009.89/x
  3. Step 3: Cross multiply
    18,393.39x = 25,383.06 × 10,009.89
  4. Step 4: Simplify right side
    18,393.39x = 254,081,638.46
  5. Step 5: Solve for x
    x = 254,081,638.46/18,393.39
  6. Step 6: Final answer
    x = 13,813.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.