Home / 30,292.38-45,378.23-18,431.55

Finding the Fourth Proportional to 30,292.38, 45,378.23 and 18,431.55

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Solution

The fourth proportional to 30,292.38, 45,378.23 and 18,431.55 is: 27,610.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,292.38 : 45,378.23 = 18,431.55 : x
  2. Step 2: Convert to fraction form
    30,292.38/45,378.23 = 18,431.55/x
  3. Step 3: Cross multiply
    30,292.38x = 45,378.23 × 18,431.55
  4. Step 4: Simplify right side
    30,292.38x = 836,391,023.00
  5. Step 5: Solve for x
    x = 836,391,023.00/30,292.38
  6. Step 6: Final answer
    x = 27,610.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.