Home / 20,615.59-28,472.73-13,928.83

Finding the Fourth Proportional to 20,615.59, 28,472.73 and 13,928.83

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Solution

The fourth proportional to 20,615.59, 28,472.73 and 13,928.83 is: 19,237.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,615.59 : 28,472.73 = 13,928.83 : x
  2. Step 2: Convert to fraction form
    20,615.59/28,472.73 = 13,928.83/x
  3. Step 3: Cross multiply
    20,615.59x = 28,472.73 × 13,928.83
  4. Step 4: Simplify right side
    20,615.59x = 396,591,815.81
  5. Step 5: Solve for x
    x = 396,591,815.81/20,615.59
  6. Step 6: Final answer
    x = 19,237.47

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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.