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Finding the Fourth Proportional to 18,402.54, 27,603.69 and 11,009.07

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Solution

The fourth proportional to 18,402.54, 27,603.69 and 11,009.07 is: 16,513.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,402.54 : 27,603.69 = 11,009.07 : x
  2. Step 2: Convert to fraction form
    18,402.54/27,603.69 = 11,009.07/x
  3. Step 3: Cross multiply
    18,402.54x = 27,603.69 × 11,009.07
  4. Step 4: Simplify right side
    18,402.54x = 303,890,955.47
  5. Step 5: Solve for x
    x = 303,890,955.47/18,402.54
  6. Step 6: Final answer
    x = 16,513.53

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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.