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Finding the Fourth Proportional to 18,133.36, 27,205.12 and 6,447.76

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Solution

The fourth proportional to 18,133.36, 27,205.12 and 6,447.76 is: 9,673.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,133.36 : 27,205.12 = 6,447.76 : x
  2. Step 2: Convert to fraction form
    18,133.36/27,205.12 = 6,447.76/x
  3. Step 3: Cross multiply
    18,133.36x = 27,205.12 × 6,447.76
  4. Step 4: Simplify right side
    18,133.36x = 175,412,084.53
  5. Step 5: Solve for x
    x = 175,412,084.53/18,133.36
  6. Step 6: Final answer
    x = 9,673.45

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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.