Home / 13,619.71-20,430.60-5,296.15

Finding the Fourth Proportional to 13,619.71, 20,430.60 and 5,296.15

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Solution

The fourth proportional to 13,619.71, 20,430.60 and 5,296.15 is: 7,944.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,619.71 : 20,430.60 = 5,296.15 : x
  2. Step 2: Convert to fraction form
    13,619.71/20,430.60 = 5,296.15/x
  3. Step 3: Cross multiply
    13,619.71x = 20,430.60 × 5,296.15
  4. Step 4: Simplify right side
    13,619.71x = 108,203,527.87
  5. Step 5: Solve for x
    x = 108,203,527.87/13,619.71
  6. Step 6: Final answer
    x = 7,944.63

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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.