Home / 13,361.20-18,436.87-7,392.06

Finding the Fourth Proportional to 13,361.20, 18,436.87 and 7,392.06

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Solution

The fourth proportional to 13,361.20, 18,436.87 and 7,392.06 is: 10,200.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,361.20 : 18,436.87 = 7,392.06 : x
  2. Step 2: Convert to fraction form
    13,361.20/18,436.87 = 7,392.06/x
  3. Step 3: Cross multiply
    13,361.20x = 18,436.87 × 7,392.06
  4. Step 4: Simplify right side
    13,361.20x = 136,286,416.91
  5. Step 5: Solve for x
    x = 136,286,416.91/13,361.20
  6. Step 6: Final answer
    x = 10,200.16

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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.