Home / 21,274.60-31,912.68-10,874.20

Finding the Fourth Proportional to 21,274.60, 31,912.68 and 10,874.20

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Solution

The fourth proportional to 21,274.60, 31,912.68 and 10,874.20 is: 16,311.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,274.60 : 31,912.68 = 10,874.20 : x
  2. Step 2: Convert to fraction form
    21,274.60/31,912.68 = 10,874.20/x
  3. Step 3: Cross multiply
    21,274.60x = 31,912.68 × 10,874.20
  4. Step 4: Simplify right side
    21,274.60x = 347,024,864.86
  5. Step 5: Solve for x
    x = 347,024,864.86/21,274.60
  6. Step 6: Final answer
    x = 16,311.70

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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.