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Finding the Fourth Proportional to 30,603.88, 42,244.50 and 18,039.16

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Solution

The fourth proportional to 30,603.88, 42,244.50 and 18,039.16 is: 24,900.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,603.88 : 42,244.50 = 18,039.16 : x
  2. Step 2: Convert to fraction form
    30,603.88/42,244.50 = 18,039.16/x
  3. Step 3: Cross multiply
    30,603.88x = 42,244.50 × 18,039.16
  4. Step 4: Simplify right side
    30,603.88x = 762,055,294.62
  5. Step 5: Solve for x
    x = 762,055,294.62/30,603.88
  6. Step 6: Final answer
    x = 24,900.61

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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.