Home / 30,658.97-42,309.54-17,912.90

Finding the Fourth Proportional to 30,658.97, 42,309.54 and 17,912.90

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Solution

The fourth proportional to 30,658.97, 42,309.54 and 17,912.90 is: 24,719.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,658.97 : 42,309.54 = 17,912.90 : x
  2. Step 2: Convert to fraction form
    30,658.97/42,309.54 = 17,912.90/x
  3. Step 3: Cross multiply
    30,658.97x = 42,309.54 × 17,912.90
  4. Step 4: Simplify right side
    30,658.97x = 757,886,347.52
  5. Step 5: Solve for x
    x = 757,886,347.52/30,658.97
  6. Step 6: Final answer
    x = 24,719.89

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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.