Home / 13,535.28-20,289.06-7,679.52

Finding the Fourth Proportional to 13,535.28, 20,289.06 and 7,679.52

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Solution

The fourth proportional to 13,535.28, 20,289.06 and 7,679.52 is: 11,511.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,535.28 : 20,289.06 = 7,679.52 : x
  2. Step 2: Convert to fraction form
    13,535.28/20,289.06 = 7,679.52/x
  3. Step 3: Cross multiply
    13,535.28x = 20,289.06 × 7,679.52
  4. Step 4: Simplify right side
    13,535.28x = 155,810,242.05
  5. Step 5: Solve for x
    x = 155,810,242.05/13,535.28
  6. Step 6: Final answer
    x = 11,511.42

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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.