Home / 21,341,647.20-31,970,480.40-12,796,600.80

Finding the Fourth Proportional to 21,341,647.20, 31,970,480.40 and 12,796,600.80

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Solution

The fourth proportional to 21,341,647.20, 31,970,480.40 and 12,796,600.80 is: 19,169,723.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,341,647.20 : 31,970,480.40 = 12,796,600.80 : x
  2. Step 2: Convert to fraction form
    21,341,647.20/31,970,480.40 = 12,796,600.80/x
  3. Step 3: Cross multiply
    21,341,647.20x = 31,970,480.40 × 12,796,600.80
  4. Step 4: Simplify right side
    21,341,647.20x = 409,113,475,063,024.31
  5. Step 5: Solve for x
    x = 409,113,475,063,024.31/21,341,647.20
  6. Step 6: Final answer
    x = 19,169,723.46

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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.