Home / 13,278.42-18,324.32-7,310.12

Finding the Fourth Proportional to 13,278.42, 18,324.32 and 7,310.12

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Solution

The fourth proportional to 13,278.42, 18,324.32 and 7,310.12 is: 10,088.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,278.42 : 18,324.32 = 7,310.12 : x
  2. Step 2: Convert to fraction form
    13,278.42/18,324.32 = 7,310.12/x
  3. Step 3: Cross multiply
    13,278.42x = 18,324.32 × 7,310.12
  4. Step 4: Simplify right side
    13,278.42x = 133,952,849.95
  5. Step 5: Solve for x
    x = 133,952,849.95/13,278.42
  6. Step 6: Final answer
    x = 10,088.01

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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.