Home / 13,360.07-18,436.13-7,391.38

Finding the Fourth Proportional to 13,360.07, 18,436.13 and 7,391.38

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Solution

The fourth proportional to 13,360.07, 18,436.13 and 7,391.38 is: 10,199.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,360.07 : 18,436.13 = 7,391.38 : x
  2. Step 2: Convert to fraction form
    13,360.07/18,436.13 = 7,391.38/x
  3. Step 3: Cross multiply
    13,360.07x = 18,436.13 × 7,391.38
  4. Step 4: Simplify right side
    13,360.07x = 136,268,442.56
  5. Step 5: Solve for x
    x = 136,268,442.56/13,360.07
  6. Step 6: Final answer
    x = 10,199.68

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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.