Home / 12,125.32-18,190.70-4,729.80

Finding the Fourth Proportional to 12,125.32, 18,190.70 and 4,729.80

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Solution

The fourth proportional to 12,125.32, 18,190.70 and 4,729.80 is: 7,095.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,125.32 : 18,190.70 = 4,729.80 : x
  2. Step 2: Convert to fraction form
    12,125.32/18,190.70 = 4,729.80/x
  3. Step 3: Cross multiply
    12,125.32x = 18,190.70 × 4,729.80
  4. Step 4: Simplify right side
    12,125.32x = 86,038,372.86
  5. Step 5: Solve for x
    x = 86,038,372.86/12,125.32
  6. Step 6: Final answer
    x = 7,095.76

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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.