Home / 30,568.35-42,191.81-18,638.26

Finding the Fourth Proportional to 30,568.35, 42,191.81 and 18,638.26

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Solution

The fourth proportional to 30,568.35, 42,191.81 and 18,638.26 is: 25,725.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,568.35 : 42,191.81 = 18,638.26 : x
  2. Step 2: Convert to fraction form
    30,568.35/42,191.81 = 18,638.26/x
  3. Step 3: Cross multiply
    30,568.35x = 42,191.81 × 18,638.26
  4. Step 4: Simplify right side
    30,568.35x = 786,381,760.29
  5. Step 5: Solve for x
    x = 786,381,760.29/30,568.35
  6. Step 6: Final answer
    x = 25,725.36

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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.