Home / 13,125.37-18,112.62-7,157.16

Finding the Fourth Proportional to 13,125.37, 18,112.62 and 7,157.16

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Solution

The fourth proportional to 13,125.37, 18,112.62 and 7,157.16 is: 9,876.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,125.37 : 18,112.62 = 7,157.16 : x
  2. Step 2: Convert to fraction form
    13,125.37/18,112.62 = 7,157.16/x
  3. Step 3: Cross multiply
    13,125.37x = 18,112.62 × 7,157.16
  4. Step 4: Simplify right side
    13,125.37x = 129,634,824.60
  5. Step 5: Solve for x
    x = 129,634,824.60/13,125.37
  6. Step 6: Final answer
    x = 9,876.66

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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.