Home / 13,606.68-20,404.78-5,285.60

Finding the Fourth Proportional to 13,606.68, 20,404.78 and 5,285.60

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Solution

The fourth proportional to 13,606.68, 20,404.78 and 5,285.60 is: 7,926.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,606.68 : 20,404.78 = 5,285.60 : x
  2. Step 2: Convert to fraction form
    13,606.68/20,404.78 = 5,285.60/x
  3. Step 3: Cross multiply
    13,606.68x = 20,404.78 × 5,285.60
  4. Step 4: Simplify right side
    13,606.68x = 107,851,581.22
  5. Step 5: Solve for x
    x = 107,851,581.22/13,606.68
  6. Step 6: Final answer
    x = 7,926.37

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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.