Home / 13,580.56-18,738.96-7,612.48

Finding the Fourth Proportional to 13,580.56, 18,738.96 and 7,612.48

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Solution

The fourth proportional to 13,580.56, 18,738.96 and 7,612.48 is: 10,503.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,580.56 : 18,738.96 = 7,612.48 : x
  2. Step 2: Convert to fraction form
    13,580.56/18,738.96 = 7,612.48/x
  3. Step 3: Cross multiply
    13,580.56x = 18,738.96 × 7,612.48
  4. Step 4: Simplify right side
    13,580.56x = 142,649,958.22
  5. Step 5: Solve for x
    x = 142,649,958.22/13,580.56
  6. Step 6: Final answer
    x = 10,503.98

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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.