Home / 30,942.52-42,696.30-18,372.28

Finding the Fourth Proportional to 30,942.52, 42,696.30 and 18,372.28

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Solution

The fourth proportional to 30,942.52, 42,696.30 and 18,372.28 is: 25,351.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,942.52 : 42,696.30 = 18,372.28 : x
  2. Step 2: Convert to fraction form
    30,942.52/42,696.30 = 18,372.28/x
  3. Step 3: Cross multiply
    30,942.52x = 42,696.30 × 18,372.28
  4. Step 4: Simplify right side
    30,942.52x = 784,428,378.56
  5. Step 5: Solve for x
    x = 784,428,378.56/30,942.52
  6. Step 6: Final answer
    x = 25,351.15

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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.