Home / 31,614.80-43,629.69-18,186.06

Finding the Fourth Proportional to 31,614.80, 43,629.69 and 18,186.06

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Solution

The fourth proportional to 31,614.80, 43,629.69 and 18,186.06 is: 25,097.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,614.80 : 43,629.69 = 18,186.06 : x
  2. Step 2: Convert to fraction form
    31,614.80/43,629.69 = 18,186.06/x
  3. Step 3: Cross multiply
    31,614.80x = 43,629.69 × 18,186.06
  4. Step 4: Simplify right side
    31,614.80x = 793,452,160.12
  5. Step 5: Solve for x
    x = 793,452,160.12/31,614.80
  6. Step 6: Final answer
    x = 25,097.49

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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.