Home / 13,278.96-18,325.44-7,310.88

Finding the Fourth Proportional to 13,278.96, 18,325.44 and 7,310.88

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Solution

The fourth proportional to 13,278.96, 18,325.44 and 7,310.88 is: 10,089.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,278.96 : 18,325.44 = 7,310.88 : x
  2. Step 2: Convert to fraction form
    13,278.96/18,325.44 = 7,310.88/x
  3. Step 3: Cross multiply
    13,278.96x = 18,325.44 × 7,310.88
  4. Step 4: Simplify right side
    13,278.96x = 133,975,092.79
  5. Step 5: Solve for x
    x = 133,975,092.79/13,278.96
  6. Step 6: Final answer
    x = 10,089.28

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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.