Home / 30,685.29-42,343.88-17,072.97

Finding the Fourth Proportional to 30,685.29, 42,343.88 and 17,072.97

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Solution

The fourth proportional to 30,685.29, 42,343.88 and 17,072.97 is: 23,559.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,685.29 : 42,343.88 = 17,072.97 : x
  2. Step 2: Convert to fraction form
    30,685.29/42,343.88 = 17,072.97/x
  3. Step 3: Cross multiply
    30,685.29x = 42,343.88 × 17,072.97
  4. Step 4: Simplify right side
    30,685.29x = 722,935,644.80
  5. Step 5: Solve for x
    x = 722,935,644.80/30,685.29
  6. Step 6: Final answer
    x = 23,559.68

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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.