Home / 13,149.51-18,145.65-7,180.03

Finding the Fourth Proportional to 13,149.51, 18,145.65 and 7,180.03

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Solution

The fourth proportional to 13,149.51, 18,145.65 and 7,180.03 is: 9,908.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,149.51 : 18,145.65 = 7,180.03 : x
  2. Step 2: Convert to fraction form
    13,149.51/18,145.65 = 7,180.03/x
  3. Step 3: Cross multiply
    13,149.51x = 18,145.65 × 7,180.03
  4. Step 4: Simplify right side
    13,149.51x = 130,286,311.37
  5. Step 5: Solve for x
    x = 130,286,311.37/13,149.51
  6. Step 6: Final answer
    x = 9,908.07

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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.