Home / 30,538.30-42,143.07-17,110.12

Finding the Fourth Proportional to 30,538.30, 42,143.07 and 17,110.12

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Solution

The fourth proportional to 30,538.30, 42,143.07 and 17,110.12 is: 23,612.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,538.30 : 42,143.07 = 17,110.12 : x
  2. Step 2: Convert to fraction form
    30,538.30/42,143.07 = 17,110.12/x
  3. Step 3: Cross multiply
    30,538.30x = 42,143.07 × 17,110.12
  4. Step 4: Simplify right side
    30,538.30x = 721,072,984.87
  5. Step 5: Solve for x
    x = 721,072,984.87/30,538.30
  6. Step 6: Final answer
    x = 23,612.09

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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.