Home / 20,919,885.60-31,373,607.60-8,133,031.20

Finding the Fourth Proportional to 20,919,885.60, 31,373,607.60 and 8,133,031.20

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Solution

The fourth proportional to 20,919,885.60, 31,373,607.60 and 8,133,031.20 is: 12,197,128.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,919,885.60 : 31,373,607.60 = 8,133,031.20 : x
  2. Step 2: Convert to fraction form
    20,919,885.60/31,373,607.60 = 8,133,031.20/x
  3. Step 3: Cross multiply
    20,919,885.60x = 31,373,607.60 × 8,133,031.20
  4. Step 4: Simplify right side
    20,919,885.60x = 255,162,529,467,357.12
  5. Step 5: Solve for x
    x = 255,162,529,467,357.12/20,919,885.60
  6. Step 6: Final answer
    x = 12,197,128.34

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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.