Home / 13,769.56-20,758.09-12,878.68

Finding the Fourth Proportional to 13,769.56, 20,758.09 and 12,878.68

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Solution

The fourth proportional to 13,769.56, 20,758.09 and 12,878.68 is: 19,415.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,769.56 : 20,758.09 = 12,878.68 : x
  2. Step 2: Convert to fraction form
    13,769.56/20,758.09 = 12,878.68/x
  3. Step 3: Cross multiply
    13,769.56x = 20,758.09 × 12,878.68
  4. Step 4: Simplify right side
    13,769.56x = 267,336,798.52
  5. Step 5: Solve for x
    x = 267,336,798.52/13,769.56
  6. Step 6: Final answer
    x = 19,415.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.