Home / 13,723.28-18,938.28-8,059.28

Finding the Fourth Proportional to 13,723.28, 18,938.28 and 8,059.28

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Solution

The fourth proportional to 13,723.28, 18,938.28 and 8,059.28 is: 11,121.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,723.28 : 18,938.28 = 8,059.28 : x
  2. Step 2: Convert to fraction form
    13,723.28/18,938.28 = 8,059.28/x
  3. Step 3: Cross multiply
    13,723.28x = 18,938.28 × 8,059.28
  4. Step 4: Simplify right side
    13,723.28x = 152,628,901.24
  5. Step 5: Solve for x
    x = 152,628,901.24/13,723.28
  6. Step 6: Final answer
    x = 11,121.90

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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.