Home / 30,918.94-42,668.15-17,489.90

Finding the Fourth Proportional to 30,918.94, 42,668.15 and 17,489.90

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Solution

The fourth proportional to 30,918.94, 42,668.15 and 17,489.90 is: 24,136.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,918.94 : 42,668.15 = 17,489.90 : x
  2. Step 2: Convert to fraction form
    30,918.94/42,668.15 = 17,489.90/x
  3. Step 3: Cross multiply
    30,918.94x = 42,668.15 × 17,489.90
  4. Step 4: Simplify right side
    30,918.94x = 746,261,695.91
  5. Step 5: Solve for x
    x = 746,261,695.91/30,918.94
  6. Step 6: Final answer
    x = 24,136.07

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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.