Home / 21,269,909.80-31,920,611.10-14,079,053.80

Finding the Fourth Proportional to 21,269,909.80, 31,920,611.10 and 14,079,053.80

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Solution

The fourth proportional to 21,269,909.80, 31,920,611.10 and 14,079,053.80 is: 21,129,003.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,269,909.80 : 31,920,611.10 = 14,079,053.80 : x
  2. Step 2: Convert to fraction form
    21,269,909.80/31,920,611.10 = 14,079,053.80/x
  3. Step 3: Cross multiply
    21,269,909.80x = 31,920,611.10 × 14,079,053.80
  4. Step 4: Simplify right side
    21,269,909.80x = 449,412,001,005,777.25
  5. Step 5: Solve for x
    x = 449,412,001,005,777.25/21,269,909.80
  6. Step 6: Final answer
    x = 21,129,003.61

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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.