Home / 13,520.37-20,280.55-5,204.30

Finding the Fourth Proportional to 13,520.37, 20,280.55 and 5,204.30

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Solution

The fourth proportional to 13,520.37, 20,280.55 and 5,204.30 is: 7,806.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,520.37 : 20,280.55 = 5,204.30 : x
  2. Step 2: Convert to fraction form
    13,520.37/20,280.55 = 5,204.30/x
  3. Step 3: Cross multiply
    13,520.37x = 20,280.55 × 5,204.30
  4. Step 4: Simplify right side
    13,520.37x = 105,546,090.42
  5. Step 5: Solve for x
    x = 105,546,090.42/13,520.37
  6. Step 6: Final answer
    x = 7,806.45

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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.