Home / 30,942.88-42,698.95-17,515.64

Finding the Fourth Proportional to 30,942.88, 42,698.95 and 17,515.64

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Solution

The fourth proportional to 30,942.88, 42,698.95 and 17,515.64 is: 24,170.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,942.88 : 42,698.95 = 17,515.64 : x
  2. Step 2: Convert to fraction form
    30,942.88/42,698.95 = 17,515.64/x
  3. Step 3: Cross multiply
    30,942.88x = 42,698.95 × 17,515.64
  4. Step 4: Simplify right side
    30,942.88x = 747,899,499.54
  5. Step 5: Solve for x
    x = 747,899,499.54/30,942.88
  6. Step 6: Final answer
    x = 24,170.33

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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.