Home / 13,149.80-18,144.60-7,559.72

Finding the Fourth Proportional to 13,149.80, 18,144.60 and 7,559.72

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Solution

The fourth proportional to 13,149.80, 18,144.60 and 7,559.72 is: 10,431.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,149.80 : 18,144.60 = 7,559.72 : x
  2. Step 2: Convert to fraction form
    13,149.80/18,144.60 = 7,559.72/x
  3. Step 3: Cross multiply
    13,149.80x = 18,144.60 × 7,559.72
  4. Step 4: Simplify right side
    13,149.80x = 137,168,095.51
  5. Step 5: Solve for x
    x = 137,168,095.51/13,149.80
  6. Step 6: Final answer
    x = 10,431.19

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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.