Home / 20,919,892.10-31,373,617.35-8,133,037.70

Finding the Fourth Proportional to 20,919,892.10, 31,373,617.35 and 8,133,037.70

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Solution

The fourth proportional to 20,919,892.10, 31,373,617.35 and 8,133,037.70 is: 12,197,138.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,919,892.10 : 31,373,617.35 = 8,133,037.70 : x
  2. Step 2: Convert to fraction form
    20,919,892.10/31,373,617.35 = 8,133,037.70/x
  3. Step 3: Cross multiply
    20,919,892.10x = 31,373,617.35 × 8,133,037.70
  4. Step 4: Simplify right side
    20,919,892.10x = 255,162,812,692,924.12
  5. Step 5: Solve for x
    x = 255,162,812,692,924.12/20,919,892.10
  6. Step 6: Final answer
    x = 12,197,138.09

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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.