Home / 30,919.26-42,668.28-16,772.10

Finding the Fourth Proportional to 30,919.26, 42,668.28 and 16,772.10

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Solution

The fourth proportional to 30,919.26, 42,668.28 and 16,772.10 is: 23,145.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,919.26 : 42,668.28 = 16,772.10 : x
  2. Step 2: Convert to fraction form
    30,919.26/42,668.28 = 16,772.10/x
  3. Step 3: Cross multiply
    30,919.26x = 42,668.28 × 16,772.10
  4. Step 4: Simplify right side
    30,919.26x = 715,636,658.99
  5. Step 5: Solve for x
    x = 715,636,658.99/30,919.26
  6. Step 6: Final answer
    x = 23,145.34

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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.