Home / 13,373.57-18,453.72-7,405.09

Finding the Fourth Proportional to 13,373.57, 18,453.72 and 7,405.09

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Solution

The fourth proportional to 13,373.57, 18,453.72 and 7,405.09 is: 10,218.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,373.57 : 18,453.72 = 7,405.09 : x
  2. Step 2: Convert to fraction form
    13,373.57/18,453.72 = 7,405.09/x
  3. Step 3: Cross multiply
    13,373.57x = 18,453.72 × 7,405.09
  4. Step 4: Simplify right side
    13,373.57x = 136,651,439.07
  5. Step 5: Solve for x
    x = 136,651,439.07/13,373.57
  6. Step 6: Final answer
    x = 10,218.02

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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.