Home / 30,127.60-41,570-18,191.44

Finding the Fourth Proportional to 30,127.60, 41,570 and 18,191.44

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Solution

The fourth proportional to 30,127.60, 41,570 and 18,191.44 is: 25,100.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,127.60 : 41,570 = 18,191.44 : x
  2. Step 2: Convert to fraction form
    30,127.60/41,570 = 18,191.44/x
  3. Step 3: Cross multiply
    30,127.60x = 41,570 × 18,191.44
  4. Step 4: Simplify right side
    30,127.60x = 756,218,160.80
  5. Step 5: Solve for x
    x = 756,218,160.80/30,127.60
  6. Step 6: Final answer
    x = 25,100.51

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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.