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Finding the Fourth Proportional to 20,304.66, 30,415.14 and 18,603.66

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Solution

The fourth proportional to 20,304.66, 30,415.14 and 18,603.66 is: 27,867.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,304.66 : 30,415.14 = 18,603.66 : x
  2. Step 2: Convert to fraction form
    20,304.66/30,415.14 = 18,603.66/x
  3. Step 3: Cross multiply
    20,304.66x = 30,415.14 × 18,603.66
  4. Step 4: Simplify right side
    20,304.66x = 565,832,923.41
  5. Step 5: Solve for x
    x = 565,832,923.41/20,304.66
  6. Step 6: Final answer
    x = 27,867.15

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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.