Home / 20,849.60-31,311.72-19,180.76

Finding the Fourth Proportional to 20,849.60, 31,311.72 and 19,180.76

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Solution

The fourth proportional to 20,849.60, 31,311.72 and 19,180.76 is: 28,805.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,849.60 : 31,311.72 = 19,180.76 : x
  2. Step 2: Convert to fraction form
    20,849.60/31,311.72 = 19,180.76/x
  3. Step 3: Cross multiply
    20,849.60x = 31,311.72 × 19,180.76
  4. Step 4: Simplify right side
    20,849.60x = 600,582,586.51
  5. Step 5: Solve for x
    x = 600,582,586.51/20,849.60
  6. Step 6: Final answer
    x = 28,805.47

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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.