Home / 20,304.27-30,312.77-18,190.17

Finding the Fourth Proportional to 20,304.27, 30,312.77 and 18,190.17

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Solution

The fourth proportional to 20,304.27, 30,312.77 and 18,190.17 is: 27,156.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,304.27 : 30,312.77 = 18,190.17 : x
  2. Step 2: Convert to fraction form
    20,304.27/30,312.77 = 18,190.17/x
  3. Step 3: Cross multiply
    20,304.27x = 30,312.77 × 18,190.17
  4. Step 4: Simplify right side
    20,304.27x = 551,394,348.52
  5. Step 5: Solve for x
    x = 551,394,348.52/20,304.27
  6. Step 6: Final answer
    x = 27,156.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.