Home / 21,156,416.20-31,745,121.90-8,377,337.80

Finding the Fourth Proportional to 21,156,416.20, 31,745,121.90 and 8,377,337.80

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Solution

The fourth proportional to 21,156,416.20, 31,745,121.90 and 8,377,337.80 is: 12,570,163.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,156,416.20 : 31,745,121.90 = 8,377,337.80 : x
  2. Step 2: Convert to fraction form
    21,156,416.20/31,745,121.90 = 8,377,337.80/x
  3. Step 3: Cross multiply
    21,156,416.20x = 31,745,121.90 × 8,377,337.80
  4. Step 4: Simplify right side
    21,156,416.20x = 265,939,609,658,477.81
  5. Step 5: Solve for x
    x = 265,939,609,658,477.81/21,156,416.20
  6. Step 6: Final answer
    x = 12,570,163.45

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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.