Home / 13,478.55-18,593.19-8,172.24

Finding the Fourth Proportional to 13,478.55, 18,593.19 and 8,172.24

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Solution

The fourth proportional to 13,478.55, 18,593.19 and 8,172.24 is: 11,273.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,478.55 : 18,593.19 = 8,172.24 : x
  2. Step 2: Convert to fraction form
    13,478.55/18,593.19 = 8,172.24/x
  3. Step 3: Cross multiply
    13,478.55x = 18,593.19 × 8,172.24
  4. Step 4: Simplify right side
    13,478.55x = 151,948,011.05
  5. Step 5: Solve for x
    x = 151,948,011.05/13,478.55
  6. Step 6: Final answer
    x = 11,273.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.