Home / 13,928.12-20,899.34-9,251.36

Finding the Fourth Proportional to 13,928.12, 20,899.34 and 9,251.36

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Solution

The fourth proportional to 13,928.12, 20,899.34 and 9,251.36 is: 13,881.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,928.12 : 20,899.34 = 9,251.36 : x
  2. Step 2: Convert to fraction form
    13,928.12/20,899.34 = 9,251.36/x
  3. Step 3: Cross multiply
    13,928.12x = 20,899.34 × 9,251.36
  4. Step 4: Simplify right side
    13,928.12x = 193,347,318.10
  5. Step 5: Solve for x
    x = 193,347,318.10/13,928.12
  6. Step 6: Final answer
    x = 13,881.80

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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.