Home / 13,615.87-20,404.80-7,362.40

Finding the Fourth Proportional to 13,615.87, 20,404.80 and 7,362.40

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Solution

The fourth proportional to 13,615.87, 20,404.80 and 7,362.40 is: 11,033.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,615.87 : 20,404.80 = 7,362.40 : x
  2. Step 2: Convert to fraction form
    13,615.87/20,404.80 = 7,362.40/x
  3. Step 3: Cross multiply
    13,615.87x = 20,404.80 × 7,362.40
  4. Step 4: Simplify right side
    13,615.87x = 150,228,299.52
  5. Step 5: Solve for x
    x = 150,228,299.52/13,615.87
  6. Step 6: Final answer
    x = 11,033.32

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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.