Home / 30,639.21-45,968.72-15,045.90

Finding the Fourth Proportional to 30,639.21, 45,968.72 and 15,045.90

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Solution

The fourth proportional to 30,639.21, 45,968.72 and 15,045.90 is: 22,573.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,639.21 : 45,968.72 = 15,045.90 : x
  2. Step 2: Convert to fraction form
    30,639.21/45,968.72 = 15,045.90/x
  3. Step 3: Cross multiply
    30,639.21x = 45,968.72 × 15,045.90
  4. Step 4: Simplify right side
    30,639.21x = 691,640,689.02
  5. Step 5: Solve for x
    x = 691,640,689.02/30,639.21
  6. Step 6: Final answer
    x = 22,573.71

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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.