Home / 18,585.45-25,640.15-11,506.86

Finding the Fourth Proportional to 18,585.45, 25,640.15 and 11,506.86

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Solution

The fourth proportional to 18,585.45, 25,640.15 and 11,506.86 is: 15,874.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,585.45 : 25,640.15 = 11,506.86 : x
  2. Step 2: Convert to fraction form
    18,585.45/25,640.15 = 11,506.86/x
  3. Step 3: Cross multiply
    18,585.45x = 25,640.15 × 11,506.86
  4. Step 4: Simplify right side
    18,585.45x = 295,037,558.89
  5. Step 5: Solve for x
    x = 295,037,558.89/18,585.45
  6. Step 6: Final answer
    x = 15,874.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.