Home / 20,678,865.20-31,018,297.80-5,326,125.20

Finding the Fourth Proportional to 20,678,865.20, 31,018,297.80 and 5,326,125.20

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Solution

The fourth proportional to 20,678,865.20, 31,018,297.80 and 5,326,125.20 is: 7,989,187.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,678,865.20 : 31,018,297.80 = 5,326,125.20 : x
  2. Step 2: Convert to fraction form
    20,678,865.20/31,018,297.80 = 5,326,125.20/x
  3. Step 3: Cross multiply
    20,678,865.20x = 31,018,297.80 × 5,326,125.20
  4. Step 4: Simplify right side
    20,678,865.20x = 165,207,337,573,684.56
  5. Step 5: Solve for x
    x = 165,207,337,573,684.56/20,678,865.20
  6. Step 6: Final answer
    x = 7,989,187.80

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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.