Home / 30,137.10-45,211.32-12,126.69

Finding the Fourth Proportional to 30,137.10, 45,211.32 and 12,126.69

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Solution

The fourth proportional to 30,137.10, 45,211.32 and 12,126.69 is: 18,192.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,137.10 : 45,211.32 = 12,126.69 : x
  2. Step 2: Convert to fraction form
    30,137.10/45,211.32 = 12,126.69/x
  3. Step 3: Cross multiply
    30,137.10x = 45,211.32 × 12,126.69
  4. Step 4: Simplify right side
    30,137.10x = 548,263,662.13
  5. Step 5: Solve for x
    x = 548,263,662.13/30,137.10
  6. Step 6: Final answer
    x = 18,192.32

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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.