Home / 13,490.91-20,245.59-4,725.72

Finding the Fourth Proportional to 13,490.91, 20,245.59 and 4,725.72

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Solution

The fourth proportional to 13,490.91, 20,245.59 and 4,725.72 is: 7,091.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,490.91 : 20,245.59 = 4,725.72 : x
  2. Step 2: Convert to fraction form
    13,490.91/20,245.59 = 4,725.72/x
  3. Step 3: Cross multiply
    13,490.91x = 20,245.59 × 4,725.72
  4. Step 4: Simplify right side
    13,490.91x = 95,674,989.57
  5. Step 5: Solve for x
    x = 95,674,989.57/13,490.91
  6. Step 6: Final answer
    x = 7,091.81

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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.