Home / 13,149.07-18,147.43-7,482.72

Finding the Fourth Proportional to 13,149.07, 18,147.43 and 7,482.72

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Solution

The fourth proportional to 13,149.07, 18,147.43 and 7,482.72 is: 10,327.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,149.07 : 18,147.43 = 7,482.72 : x
  2. Step 2: Convert to fraction form
    13,149.07/18,147.43 = 7,482.72/x
  3. Step 3: Cross multiply
    13,149.07x = 18,147.43 × 7,482.72
  4. Step 4: Simplify right side
    13,149.07x = 135,792,137.41
  5. Step 5: Solve for x
    x = 135,792,137.41/13,149.07
  6. Step 6: Final answer
    x = 10,327.13

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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.