Home / 27,972.06-41,958.90-12,390.90

Finding the Fourth Proportional to 27,972.06, 41,958.90 and 12,390.90

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Solution

The fourth proportional to 27,972.06, 41,958.90 and 12,390.90 is: 18,586.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,972.06 : 41,958.90 = 12,390.90 : x
  2. Step 2: Convert to fraction form
    27,972.06/41,958.90 = 12,390.90/x
  3. Step 3: Cross multiply
    27,972.06x = 41,958.90 × 12,390.90
  4. Step 4: Simplify right side
    27,972.06x = 519,908,534.01
  5. Step 5: Solve for x
    x = 519,908,534.01/27,972.06
  6. Step 6: Final answer
    x = 18,586.71

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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.