Home / 30,534.36-42,143.88-18,601.56

Finding the Fourth Proportional to 30,534.36, 42,143.88 and 18,601.56

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Solution

The fourth proportional to 30,534.36, 42,143.88 and 18,601.56 is: 25,674.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,534.36 : 42,143.88 = 18,601.56 : x
  2. Step 2: Convert to fraction form
    30,534.36/42,143.88 = 18,601.56/x
  3. Step 3: Cross multiply
    30,534.36x = 42,143.88 × 18,601.56
  4. Step 4: Simplify right side
    30,534.36x = 783,941,912.45
  5. Step 5: Solve for x
    x = 783,941,912.45/30,534.36
  6. Step 6: Final answer
    x = 25,674.09

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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.