Home / 30,568.97-42,192.68-18,638.88

Finding the Fourth Proportional to 30,568.97, 42,192.68 and 18,638.88

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Solution

The fourth proportional to 30,568.97, 42,192.68 and 18,638.88 is: 25,726.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,568.97 : 42,192.68 = 18,638.88 : x
  2. Step 2: Convert to fraction form
    30,568.97/42,192.68 = 18,638.88/x
  3. Step 3: Cross multiply
    30,568.97x = 42,192.68 × 18,638.88
  4. Step 4: Simplify right side
    30,568.97x = 786,424,206.20
  5. Step 5: Solve for x
    x = 786,424,206.20/30,568.97
  6. Step 6: Final answer
    x = 25,726.23

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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.