Home / 30,633.40-45,977.10-18,137.80

Finding the Fourth Proportional to 30,633.40, 45,977.10 and 18,137.80

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Solution

The fourth proportional to 30,633.40, 45,977.10 and 18,137.80 is: 27,222.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,633.40 : 45,977.10 = 18,137.80 : x
  2. Step 2: Convert to fraction form
    30,633.40/45,977.10 = 18,137.80/x
  3. Step 3: Cross multiply
    30,633.40x = 45,977.10 × 18,137.80
  4. Step 4: Simplify right side
    30,633.40x = 833,923,444.38
  5. Step 5: Solve for x
    x = 833,923,444.38/30,633.40
  6. Step 6: Final answer
    x = 27,222.69

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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.