Home / 20,970,723.10-31,393,099.05-12,446,671.90

Finding the Fourth Proportional to 20,970,723.10, 31,393,099.05 and 12,446,671.90

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Solution

The fourth proportional to 20,970,723.10, 31,393,099.05 and 12,446,671.90 is: 18,632,624.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,970,723.10 : 31,393,099.05 = 12,446,671.90 : x
  2. Step 2: Convert to fraction form
    20,970,723.10/31,393,099.05 = 12,446,671.90/x
  3. Step 3: Cross multiply
    20,970,723.10x = 31,393,099.05 × 12,446,671.90
  4. Step 4: Simplify right side
    20,970,723.10x = 390,739,603,799,551.69
  5. Step 5: Solve for x
    x = 390,739,603,799,551.69/20,970,723.10
  6. Step 6: Final answer
    x = 18,632,624.25

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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.