Home / 14,285.68-21,420.84-10,399.60

Finding the Fourth Proportional to 14,285.68, 21,420.84 and 10,399.60

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Solution

The fourth proportional to 14,285.68, 21,420.84 and 10,399.60 is: 15,593.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,285.68 : 21,420.84 = 10,399.60 : x
  2. Step 2: Convert to fraction form
    14,285.68/21,420.84 = 10,399.60/x
  3. Step 3: Cross multiply
    14,285.68x = 21,420.84 × 10,399.60
  4. Step 4: Simplify right side
    14,285.68x = 222,768,167.66
  5. Step 5: Solve for x
    x = 222,768,167.66/14,285.68
  6. Step 6: Final answer
    x = 15,593.81

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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.