Home / 13,739.10-20,614.05-5,417.70

Finding the Fourth Proportional to 13,739.10, 20,614.05 and 5,417.70

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Solution

The fourth proportional to 13,739.10, 20,614.05 and 5,417.70 is: 8,128.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,739.10 : 20,614.05 = 5,417.70 : x
  2. Step 2: Convert to fraction form
    13,739.10/20,614.05 = 5,417.70/x
  3. Step 3: Cross multiply
    13,739.10x = 20,614.05 × 5,417.70
  4. Step 4: Simplify right side
    13,739.10x = 111,680,738.69
  5. Step 5: Solve for x
    x = 111,680,738.69/13,739.10
  6. Step 6: Final answer
    x = 8,128.68

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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.