Home / 30,561.81-42,175.14-17,133.09

Finding the Fourth Proportional to 30,561.81, 42,175.14 and 17,133.09

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Solution

The fourth proportional to 30,561.81, 42,175.14 and 17,133.09 is: 23,643.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,561.81 : 42,175.14 = 17,133.09 : x
  2. Step 2: Convert to fraction form
    30,561.81/42,175.14 = 17,133.09/x
  3. Step 3: Cross multiply
    30,561.81x = 42,175.14 × 17,133.09
  4. Step 4: Simplify right side
    30,561.81x = 722,590,469.38
  5. Step 5: Solve for x
    x = 722,590,469.38/30,561.81
  6. Step 6: Final answer
    x = 23,643.58

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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.