Home / 13,928.76-20,790.54-12,759.66

Finding the Fourth Proportional to 13,928.76, 20,790.54 and 12,759.66

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Solution

The fourth proportional to 13,928.76, 20,790.54 and 12,759.66 is: 19,045.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,928.76 : 20,790.54 = 12,759.66 : x
  2. Step 2: Convert to fraction form
    13,928.76/20,790.54 = 12,759.66/x
  3. Step 3: Cross multiply
    13,928.76x = 20,790.54 × 12,759.66
  4. Step 4: Simplify right side
    13,928.76x = 265,280,221.62
  5. Step 5: Solve for x
    x = 265,280,221.62/13,928.76
  6. Step 6: Final answer
    x = 19,045.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.