Home / 13,212.64-18,234.96-7,548.28

Finding the Fourth Proportional to 13,212.64, 18,234.96 and 7,548.28

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Solution

The fourth proportional to 13,212.64, 18,234.96 and 7,548.28 is: 10,417.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,212.64 : 18,234.96 = 7,548.28 : x
  2. Step 2: Convert to fraction form
    13,212.64/18,234.96 = 7,548.28/x
  3. Step 3: Cross multiply
    13,212.64x = 18,234.96 × 7,548.28
  4. Step 4: Simplify right side
    13,212.64x = 137,642,583.87
  5. Step 5: Solve for x
    x = 137,642,583.87/13,212.64
  6. Step 6: Final answer
    x = 10,417.49

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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.