Home / 30,180.10-45,272.32-12,647.38

Finding the Fourth Proportional to 30,180.10, 45,272.32 and 12,647.38

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Solution

The fourth proportional to 30,180.10, 45,272.32 and 12,647.38 is: 18,971.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,180.10 : 45,272.32 = 12,647.38 : x
  2. Step 2: Convert to fraction form
    30,180.10/45,272.32 = 12,647.38/x
  3. Step 3: Cross multiply
    30,180.10x = 45,272.32 × 12,647.38
  4. Step 4: Simplify right side
    30,180.10x = 572,576,234.52
  5. Step 5: Solve for x
    x = 572,576,234.52/30,180.10
  6. Step 6: Final answer
    x = 18,971.98

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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.