Home / 30,568.22-42,191.64-18,638.13

Finding the Fourth Proportional to 30,568.22, 42,191.64 and 18,638.13

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Solution

The fourth proportional to 30,568.22, 42,191.64 and 18,638.13 is: 25,725.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,568.22 : 42,191.64 = 18,638.13 : x
  2. Step 2: Convert to fraction form
    30,568.22/42,191.64 = 18,638.13/x
  3. Step 3: Cross multiply
    30,568.22x = 42,191.64 × 18,638.13
  4. Step 4: Simplify right side
    30,568.22x = 786,373,271.23
  5. Step 5: Solve for x
    x = 786,373,271.23/30,568.22
  6. Step 6: Final answer
    x = 25,725.19

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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.